The following railroads operate in the U.S. state of Texas.
{{TOC right}}| Name | Mark | System[1] | From | To | Successor | Notes | | Abilene and Northern Railway | CB&Q | 1906 | 1952 | Fort Worth and Denver Railway |
| Abilene and Southern Railway | A&S, AS | MP | 1909 | 1978 | Missouri Pacific Railroad |
| Acme, Red River and Northern Railway | SLSF | 1902 | 1909 | Quanah, Acme and Pacific Railway |
| Acme Tap Railroad | CB&Q | 1899 | 1938 | N/A |
| Air Line Railroad | SP | 1860 | | Washington County Railroad |
| Aransas Harbor Terminal Railway | 1892 | 1947 | N/A |
| Artesian Belt Railroad | MP | 1908 | 1920 | San Antonio Southern Railway |
| Asherton and Gulf Railway | MP | 1909 | 1956 | Missouri Pacific Railroad |
| Asphalt Belt Railway | MP | 1923 | 1956 | Missouri Pacific Railroad |
| Atchison, Topeka and Santa Fe Railway | ATSF | ATSF | 1965 | 1996 | Burlington Northern and Santa Fe Railway |
| Austin Area Terminal Railroad | AUAR | 2000 | 2007 | Austin Western Railroad |
| Austin Dam and Suburban Railway | MP | 1895 | 1956 | Missouri Pacific Railroad |
| Austin and Northwestern Railroad | AUNW | 1986 | 1996 | Longhorn Railway |
| Austin and Northwestern Railroad | SP | 1881 | 1901 | Houston and Texas Central Railroad |
| Austin and Oatmanville Railway | 1883 | 1888 | N/A |
| Bartlett–Florence Railway | 1909 | 1911 | Bartlett Western Railway |
| Bartlett Western Railway | 1911 | 1935 | N/A |
| Bastrop and Taylor Railway | MKT | 1886 | 1886 | Taylor, Bastrop and Houston Railway |
| Beaumont and Great Northern Railroad | MKT | 1905 | 1923 | Waco, Beaumont, Trinity and Sabine Railway |
| Beaumont, Sour Lake and Port Arthur Traction Company | MP | 1903 | 1904 | Beaumont, Sour Lake and Western Railway |
| Beaumont, Sour Lake and Western Railway | MP | 1904 | 1956 | Missouri Pacific Railroad |
| Beaumont and Saratoga Transportation Company | 1905 | 1935 | N/A |
| Beaumont Wharf and Terminal Company | ATSF | 1897 | 1957 | Gulf, Colorado and Santa Fe Railway |
| Belton Railroad | BRR | 1960 | 1991 | Georgetown Railroad |
| Black Bayou Railroad | 1904 | | N/A |
| Blackwell, Enid and Texas Railway | SLSF | 1901 | 1904 | St. Louis, San Francisco and Texas Railway |
| Board of Trustees of the Galveston Wharves | GWF | 1940 | Still exists as a lessor of the Galveston Railroad |
| Bois d'Arc and Southern Railway | BDS | 1934 | 1946 | N/A |
| Bowers and Piney Creek Railway | 1889 | 1891 | N/A |
| Brazos, Santiago and Rio Grande Railroad | 1865 | 1867 | N/A |
| Brownsville and Gulf Railway | MP/ NDM | 1883 | 1906 | Brownsville and Matamoros Bridge Company |
| Brownsville and Matamoros Bridge Company | MP/ NDM | 1909 | Still exists as a joint subsidiary of the Mexican government and Union Pacific Railroad |
| Brownwood North and South Railway | SLSF | 1910 | 1926 | N/A |
| Buffalo Bayou, Brazos and Colorado Railway | SP | 1850 | 1870 | Galveston, Harrisburg and San Antonio Railway |
| Burlington Northern Inc. | BN | 1980 | 1981 | Burlington Northern Railroad |
| Burlington Northern Railroad | BN | 1981 | 1996 | Burlington Northern and Santa Fe Railway |
| Burlington – Rock Island Railroad | BRI | CB&Q/ RI | 1930 | 1964 | Fort Worth and Denver Railway, Chicago, Rock Island and Pacific Railroad |
| Burr's Ferry, Browndel and Chester Railway | SP | 1906 | 1914 | Texas and New Orleans Railroad |
| Calvert, Waco and Brazos Valley Railroad | MP | 1899 | 1900 | International and Great Northern Railroad |
| Cane Belt Railroad | ATSF | 1898 | 1948 | Gulf, Colorado and Santa Fe Railway |
| Caro Northern Railway | 1906 | 1928 | N/A |
| Cen-Tex Rail Link | CTE | 1994 | 1996 | South Orient Railroad |
| Central and Montgomery Railway | ATSF | 1877 | 1882 | Gulf, Colorado and Santa Fe Railway |
| Central Texas and Northwestern Railway | SP | 1881 | 1901 | Houston and Texas Central Railroad |
| Chicago, Rock Island and Gulf Railway | RI&G, RIG | RI | 1902 | 1948 | Chicago, Rock Island and Pacific Railroad |
| Chicago, Rock Island and Mexico Railway | RI | 1900 | 1903 | Chicago, Rock Island and Gulf Railway |
| Chicago, Rock Island and Pacific Railroad | RI, ROCK | RI | 1947 | 1980 | Atchison, Topeka and Santa Fe Railway, Fort Worth and Denver Railway, North Central Texas Railway, Oklahoma, Kansas and Texas Railroad, St. Louis Southwestern Railway, Texas North Western Railway |
| Chicago, Rock Island and Pacific Railway | RI | RI | 1939 | 1948 | Chicago, Rock Island and Pacific Railroad |
| Chicago, Rock Island and Texas Railway | RI | 1892 | 1903 | Chicago, Rock Island and Gulf Railway |
| Chicago, Texas and Mexican Central Railway | ATSF | 1880 | 1882 | Gulf, Colorado and Santa Fe Railway |
| Choctaw, Oklahoma and Texas Railroad | RI | 1901 | 1903 | Chicago, Rock Island and Gulf Railway |
| Cisco and Northeastern Railway | MP | 1918 | 1942 | N/A |
| Clinton-Oklahoma-Western Railroad Company of Texas | ATSF | 1927 | 1948 | Panhandle and Santa Fe Railway |
| Colorado River Western Railway | CRW | SP | 1955 | 1958 | Texas and New Orleans Railroad |
| Colorado Valley Railway | ATSF | 1897 | 1899 | Panhandle and Gulf Railway |
| Columbus Tap Railway | SP | 1860 | 1866 | Buffalo Bayou, Brazos and Colorado Railway |
| Concho, San Saba and Llano Valley Railroad | ATSF | 1909 | 1948 | Gulf, Colorado and Santa Fe Railway |
| Corpus Christi, San Diego and Rio Grande Narrow Gauge Railroad | NDM | 1875 | 1881 | Texas Mexican Railway |
| Crosbyton Railway | CBYN | 1990 | 1990 | N/A |
| Crosbyton–Southplains Railroad | ATSF | 1910 | 1916 | South Plains and Santa Fe Railway |
| Crystal City Railroad | CYCY | 1990 | 1995 | N/A |
| Crystal City and Uvalde Railroad | MP | 1909 | 1912 | San Antonio, Uvalde and Gulf Railroad |
| Dallas and Cleburne Railroad | ATSF | 1876 | 1879 | Dallas, Cleburne and Rio Grande Railway |
| Dallas, Cleburne and Rio Grande Railway | ATSF | 1879 | 1880 | Chicago, Texas and Mexican Central Railway |
| Dallas, Cleburne and Southwestern Railway | MKT | 1902 | 1923 | N/A |
| Dallas, Fort Worth and Gulf Railway | SSW | 1899 | 1901 | Dallas Terminal Railway and Union Depot Company |
| Dallas and Greenville Railway | MKT | 1886 | 1886 | Missouri, Kansas and Texas Railway |
| Dallas and New Mexico Railway | SLSF | | 1908 | Gulf, Texas and Western Railway |
| Dallas, Pacific and Southeastern Railway | SLSF | 1889 | | Dallas and New Mexico Railway |
| Dallas Terminal Railway and Union Depot Company | SSW | 1901 | 1994 | St. Louis Southwestern Railway |
| Dallas Terminal Railway and Union Depot Company | SSW | 1884 | 1899 | Dallas, Fort Worth and Gulf Railway |
| Dallas and Waco Railway | MKT | 1886 | 1891 | Missouri, Kansas and Texas Railway |
| Dallas and Wichita Railroad | MKT | 1871 | 1881 | Missouri, Kansas and Texas Railway |
| Dayton – Goose Creek Railway | SP | 1917 | 1934 | Texas and New Orleans Railroad |
| DeKalb and Red River Railroad | 1891 | 1899 | N/A |
| Denison, Bonham and New Orleans Railroad | MKT | 1901 | 1928 | N/A |
| Denison, Bonham and New Orleans Railway | MKT | 1888 | 1901 | Denison, Bonham and New Orleans Railroad |
| Denison and Pacific Railway | MKT | 1878 | 1880 | Denison and Southeastern Railway |
| Denison and Pacific Suburban Railway | MP | 1895 | 1966 | N/A |
| Denison and Southeastern Railway | MKT | 1877 | 1880 | Missouri, Kansas and Texas Extension Railway |
| Denison and Washita Valley Railway | MKT | 1886 | 1903 | Missouri, Kansas and Texas Railway of Texas |
| East Line and Red River Railroad | MKT | 1871 | 1881 | Missouri, Kansas and Texas Railway |
| East Texas Railway | SP | 1880 | 1881 | Sabine and East Texas Railway |
| East Texas Central Railroad | ETC | 1996 | 1998 | Blacklands Railroad |
| East Texas and Gulf Railway | 1917 | 1934 | N/A |
| Eastern Texas Railroad | SSW | 1900 | 1921 | N/A |
| Eastern Texas Railroad | 1860 | 1863 | N/A |
| Eastland, Wichita Falls and Gulf Railroad | 1918 | 1944 | N/A |
| El Paso and Northeastern Railroad | SP | 1896 | 1937 | El Paso and Southwestern Railroad of Texas |
| El Paso Northern Railway | SP | 1894 | 1897 | El Paso and Northeastern Railroad |
| El Paso Southern Railway | SP | 1897 | 1961 | Southern Pacific Company |
| El Paso and Southwestern Railroad of Texas | SP | 1902 | 1961 | Southern Pacific Company |
| El Paso Terminal Railroad | SP | 1901 | 1903 | El Paso and Southwestern Railroad of Texas |
| El Paso Union Passenger Depot Company | ATSF/ MP/ NDM/ SP | 1903 | 1974 | N/A |
| Emporia and Gulf Railroad | 1900 | | N/A |
| Estacado and Gulf Railroad | 1908 | 1911 | N/A |
| Floydada and Plainview Railroad | FAPR | 1990 | 1995 | Plainview Terminal Company |
| Fort Worth Belt Railway | FWB | MP | 1903 | 1978 | Missouri Pacific Railroad |
| Fort Worth and Denver Railway | FW&D, FWD | CB&Q | 1951 | 1982 | Burlington Northern Railroad |
| Fort Worth and Denver City Railway | FW&D | CB&Q | 1873 | 1951 | Fort Worth and Denver Railway |
| Fort Worth and Denver Northern Railway | CB&Q | 1929 | 1952 | Fort Worth and Denver Railway |
| Fort Worth and Denver South Plains Railway | CB&Q | 1925 | 1952 | Fort Worth and Denver Railway |
| Fort Worth and Denver Terminal Railway | CB&Q | 1890 | 1952 | Fort Worth and Denver Railway |
| Fort Worth and New Orleans Railway | SP | 1885 | 1901 | Houston and Texas Central Railroad |
| Fort Worth and Rio Grande Railway | ATSF | 1885 | 1948 | Gulf, Colorado and Santa Fe Railway |
| Fort Worth Stock Yards Belt Railway | MP | 1895 | 1903 | Fort Worth Belt Railway |
| Fort Worth Union Passenger Station Company | ATSF | 1899 | 1960 | Gulf, Colorado and Santa Fe Railway |
| Fredericksburg and Northern Railway | 1917 | 1942 | N/A |
| Gainesville, Henrietta and Western Railway | MKT | 1886 | 1887 | Missouri, Kansas and Texas Railway |
| Galveston Railway | GVSR | 1987 | 1991 | Galveston Railroad |
| Galveston, Beaumont and Northeastern Railway | 1906 | | N/A |
| Galveston, Brazos and Colorado Narrow Gauge Railway | ATSF | 1875 | 1887 | Galveston and Western Railway |
| Galveston, Harrisburg and San Antonio Railway | GHSA | SP | 1870 | 1934 | Texas and New Orleans Railroad |
| Galveston, Houston and Henderson Railroad | GH&H, GHH | MKT/ MP | 1853 | 1989 | Missouri Pacific Railroad |
| Galveston and Houston Junction Railroad | MKT/ MP | 1861 | 1871 | Galveston, Houston and Henderson Railroad |
| Galveston, Houston and Northern Railway | SP | 1899 | 1905 | Galveston, Harrisburg and San Antonio Railway |
| Galveston, LaPorte and Houston Railway | SP | 1895 | 1898 | Galveston, Houston and Northern Railway |
| Galveston and Red River Railway | SP | 1848 | 1856 | Houston and Texas Central Railway |
| Galveston, Sabine and St. Louis Railway | ATSF | 1882 | 1888 | Texas, Sabine Valley and Northwestern Railway |
| Galveston Terminal Railway | CB&Q/ RI | 1905 | 1985 | Burlington Northern Railroad |
| Galveston and Western Railway | ATSF | 1887 | 1923 | Gulf, Colorado and Santa Fe Railway |
| Galveston Wharf Company | GWF | 1870 | 1940 | Board of Trustees of the Galveston Wharves |
| Georgetown Railroad | MP | 1878 | 1879 | International and Great Northern Railroad |
| Georgetown and Granger Railroad | MKT | 1890 | 1902 | Granger, Georgetown, Austin and San Antonio Railway |
| Gonzales Branch Railroad | SP | 1881 | 1905 | Galveston, Harrisburg and San Antonio Railway |
| Granger, Georgetown, Austin and San Antonio Railway | MKT | 1902 | 1903 | Missouri, Kansas and Texas Railway of Texas |
| Granite Mountain and Marble Falls Railroad | SP | 1888 | 1901 | Houston and Texas Central Railroad |
| Great Southwest Railroad | GSW | MP/ RI | 1957 | 1987 | Missouri Pacific Railroad |
| Greenville Northwestern Railway | 1913 | 1916 | N/A |
| Greenville and Whitewright Northern Traction Company | 1912 | 1913 | Greenville Northwestern Railway |
| Groveton, Lufkin and Northern Railway | GL&N | 1908 | 1932 | N/A |
| Gulf, Beaumont and Great Northern Railway | ATSF | 1898 | 1948 | Gulf, Colorado and Santa Fe Railway |
| Gulf, Beaumont and Kansas City Railway | ATSF | 1893 | 1948 | Gulf, Colorado and Santa Fe Railway |
| Gulf and Brazos Valley Railway | 1897 | 1903 | N/A |
| Gulf, Colorado and Santa Fe Railway | ATSF | 1873 | 1965 | Atchison, Topeka and Santa Fe Railway |
| Gulf, Colorado and San Saba Railway | GCSR | 1993 | 2013 | Heart of Texas Railroad |
| Gulf and Interstate Railway of Texas | ATSF | 1894 | 1994 | Atchison, Topeka and Santa Fe Railway |
| Gulf and Northern Railway | 1917 | 1943 | N/A |
| Gulf, Texas and Western Railway | GT&W | SLSF | 1908 | 1940 | Chicago, Rock Island and Gulf Railway |
| Gulf, Western Texas and Pacific Railway | SP | 1870 | 1905 | Galveston, Harrisburg and San Antonio Railway |
| GWI Switching Services | GWSW | 1994 | 1997 | CMC Railroad |
| Hamlin and Northwestern Railway | 1929 | 1956 | N/A |
| Hearne and Brazos Valley Railway | SP | 1891 | 1914 | Houston and Texas Central Railroad |
| Henderson and Burkeville Railroad | 1852 | 1856 | Mexican Gulf and Henderson Railroad |
| Henderson and Overton Branch Railroad | MP | 1874 | 1911 | International and Great Northern Railway |
| Horton Gravel Railroad | SP | 1928 | 1929 | Texas and New Orleans Railroad |
| Houston Railway | SP | 1892 | 1902 | Houston and Texas Central Railroad |
| Houston Belt and Magnolia Park Railway | MP | 1889 | 1893 | Houston, Oaklawn and Magnolia Park Railway |
| Houston Belt and Terminal Railway | HBT | ATSF/ CB&Q/ MP/ RI | 1905 | date=July 2010}} |
| Houston and Brazos Valley Railway | H&BV | MP | 1907 | 1956 | Missouri Pacific Railroad |
| Houston East and West Texas Railway | HEWT | SP | 1875 | 1934 | Texas and New Orleans Railroad |
| Houston and Great Northern Railroad | MP | 1866 | 1873 | International and Great Northern Railroad |
| Houston Municipal Railway | 1905 | 1924 | Port Terminal Railroad Association |
| Houston North Shore Railway | MP | 1925 | 1956 | Missouri Pacific Railroad |
| Houston, Oaklawn and Magnolia Park Railway | MP | 1899 | 1903 | International and Great Northern Railroad |
| Houston Tap Railroad | MP | 1850 | 1858 | Houston Tap and Brazoria Railway |
| Houston Tap and Brazoria Railway | MP | 1856 | 1873 | Houston and Great Northern Railroad |
| Houston and Texas Central Railroad | H&TC | SP | 1889 | 1934 | Texas and New Orleans Railroad |
| Houston and Texas Central Railway | SP | 1856 | 1889 | Houston and Texas Central Railroad |
| Huntsville Branch Railway | MP | 1871 | 1873 | Houston and Great Northern Railroad |
| Imperial Valley Railway | MP | 1907 | 1912 | Sugar Land Railway |
| Indianola Railroad | SP | 1858 | 1871 | Gulf, Western Texas and Pacific Railway |
| International Railroad | MP | 1870 | 1873 | International and Great Northern Railroad |
| International – Great Northern Railroad | IGN | MP | 1922 | 1956 | Missouri Pacific Railroad |
| International and Great Northern Railroad | MP | 1873 | 1911 | International and Great Northern Railway |
| International and Great Northern Railway | I&GN | MP | 1911 | 1922 | International – Great Northern Railroad |
| Jasper and Eastern Railway | ATSF | 1904 | 1948 | Gulf, Colorado and Santa Fe Railway |
| Jefferson and Northwestern Railroad | 1934 | 1941 | N/A |
| Jefferson and Northwestern Railway | 1899 | 1934 | Jefferson and Northwestern Railroad |
| Kansas City, El Paso and Mexican Railway of Texas | SP | 1888 | 1892 | El Paso Northern Railway |
| Kansas City, Mexico and Orient Railway of Texas | KCM&O | ATSF | 1905 | 1965 | Atchison, Topeka and Santa Fe Railway |
| Kansas and Gulf Short Line Railroad | SSW | 1880 | 1887 | St. Louis, Arkansas and Texas Railway in Texas |
| Kansas, Oklahoma and Gulf Railway | KOG | MP | 1948 | 1964 | N/A |
| Kansas, Oklahoma and Gulf Railway of Texas | MP | 1921 | 1964 | N/A |
| Kildare and Linden Railway | 1889 | 1900 | N/A |
| Lake Creek Railroad | 1884 | 1896 | N/A |
| Lancaster Tap Railroad | SP | 1890 | 1905 | Houston and Texas Central Railroad |
| LaPorte, Houston and Northern Railroad | SP | 1892 | 1895 | Galveston, LaPorte and Houston Railway |
| Livingston and Southeastern Railway | 1903 | 1913 | N/A |
| Llano Estacado Railway | ATSF | 1909 | 1910 | Pecos and Northern Texas Railway |
| Longhorn Railway | LHRR | 1996 | 2000 | Austin Area Terminal Railroad |
| Longview and Sabine Valley Railway | ATSF | 1877 | 1886 | Galveston, Sabine and St. Louis Railway |
| Louisiana Railway and Navigation Company of Texas | KCS | 1923 | 1930 | Louisiana, Arkansas and Texas Railway |
| Louisiana and Arkansas Railway | L&A, LA | KCS | 1939 | 1992 | Kansas City Southern Railway |
| Louisiana, Arkansas and Texas Railway | KCS | 1930 | 1939 | Louisiana and Arkansas Railway |
| Louisiana Western Extension Railroad | SP | 1879 | 1900 | Texas and New Orleans Railroad |
| Lufkin, Hemphill and Gulf Railway | LH&G | 1912 | 1937 | N/A |
| Marshall and East Texas Railway | 1908 | 1918 | Marshall, Elysian Fields and Southeastern Railway, Texas and Pacific Railway, Winnsboro and Gilmer Railroad |
| Marshall, Elysian Fields and Southeastern Railway | 1922 | 1945 | N/A |
| Marshall, Jefferson and North Western Railway | 1883 | 1883 | Marshall and Northwestern Railway |
| Marshall and Northwestern Railway | 1883 | 1885 | Marshall, Paris and Northwestern Railway |
| Marshall and Northwestern Railway | 1882 | 1883 | Marshall, Jefferson and North Western Railway |
| Marshall, Paris and Northwestern Railway | 1885 | 1888 | Paris, Marshall and Sabine Pass Railway |
| Marshall, Timpson and Sabine Pass Railway | ATSF | 1896 | 1904 | Texas and Gulf Railway |
| Memphis, El Paso and Pacific Railroad | MP | 1853 | 1873 | Texas and Pacific Railway |
| Mexican Gulf and Henderson Railroad | SSW | 1856 | 1860 | Eastern Texas Railroad |
| Midland and Northwestern Railway | 1916 | 1920 | N/A |
| Mineral Wells and Eastern Railway | MWRY | 1989 | 1992 | N/A |
| Missouri–Kansas–Texas Railroad | MKT | MKT | 1960 | 1989 | Missouri Pacific Railroad |
| Missouri–Kansas–Texas Railroad of Texas | MKTT | MKT | 1923 | 1960 | Missouri–Kansas–Texas Railroad |
| Missouri, Kansas and Texas Railway | MKT | 1870 | 1893 | Missouri, Kansas and Texas Railway of Texas, Sherman, Shreveport and Southern Railway |
| Missouri, Kansas and Texas Railway of Texas | MKTT | MKT | 1891 | 1923 | Louisiana Railway and Navigation Company of Texas, Missouri–Kansas–Texas Railroad of Texas |
| Missouri, Kansas and Texas Extension Railway | MKT | 1880 | 1881 | Missouri, Kansas and Texas Railway |
| Missouri, Oklahoma and Gulf Railway of Texas | MP | 1910 | 1921 | Kansas, Oklahoma and Gulf Railway of Texas |
| Missouri Pacific Railroad | MP | MP | 1956 | 1997 | Union Pacific Railroad |
| Missouri Pacific Railway | MP | 1880 | 1888 | N/A |
| Motley County Railway | MCY | SLSF | 1913 | 1926 | Quanah, Acme and Pacific Railway |
| Nacogdoches and Southeastern Railroad | 1905 | 1954 | N/A |
| New York, Texas and Mexican Railway | SP | 1880 | 1905 | Galveston, Harrisburg and San Antonio Railway |
| North Central Texas Railway | NCTR | 1982 | 1982 | Oklahoma, Kansas and Texas Railroad |
| North Galveston, Houston and Kansas City Railroad | SP | 1892 | 1895 | Galveston, LaPorte and Houston Railway |
| North Plains and Santa Fe Railway | ATSF | 1930 | 1948 | Panhandle and Santa Fe Railway |
| North Texas and Santa Fe Railway | ATSF | 1916 | 1948 | Panhandle and Santa Fe Railway |
| Northside Belt Railway | 1925 | 1964 | Port Terminal Railroad Association |
| Nueces Valley, Rio Grande and Mexico Railway | MP | 1905 | 1909 | Asherton and Gulf Railway |
| Oklahoma City and Texas Railroad | SLSF | 1901 | 1904 | St. Louis, San Francisco and Texas Railway |
| Oklahoma, Kansas and Texas Railroad | OKKT | MKT | 1980 | 1989 | Missouri–Kansas–Texas Railroad |
| Orange and Northwestern Railroad | MP | 1901 | 1956 | Missouri Pacific Railroad |
| Panhandle Railway | ATSF | 1887 | 1898 | Southern Kansas Railway of Texas |
| Panhandle and Gulf Railway | ATSF | 1899 | 1905 | Kansas City, Mexico and Orient Railway of Texas |
| Panhandle and Santa Fe Railway | ATSF | 1914 | 1965 | Atchison, Topeka and Santa Fe Railway |
| Paris, Choctaw and Little Rock Railway | 1888 | | N/A |
| Paris and Great Northern Railroad | SLSF | 1881 | 1928 | St. Louis, San Francisco and Texas Railway |
| Paris, Marshall and Sabine Pass Railway | 1888 | 1892 | Texas Southern Railway |
| Paris and Mount Pleasant Railroad | P&MP, PMP | 1909 | 1956 | N/A |
| PB Railroad | 1974 | 1975 | Western Rail Road |
| Peach River and Gulf Railway | 1904 | 1908 | N/A |
| Pecos and Northern Texas Railway | ATSF | 1898 | 1948 | Panhandle and Santa Fe Railway |
| Pecos River Railroad | ATSF | 1890 | 1948 | Panhandle and Santa Fe Railway |
| Port Arthur Canal and Dock Company | KCS | 1902 | |
| Port Arthur Channel and Dock Company | KCS | 1897 | 1902 | Port Arthur Canal and Dock Company |
| Port Bolivar Iron Ore Railway | ATSF | 1910 | 1927 | N/A |
| Port Isabel and Rio Grande Valley Railway | MP | 1928 | 1940 | St. Louis, Brownsville and Mexico Railroad, San Benito and Rio Grande Valley Railroad |
| Quanah, Acme and Pacific Railway | QA&P, QAP | SLSF | 1909 | 1981 | Burlington Northern Railroad |
| Red River and Southwestern Railway | 1890 | | Southwestern Railway |
| Red River, Texas and Southern Railway | SLSF | 1901 | 1904 | St. Louis, San Francisco and Texas Railway |
| Rio Grande Railroad | MP | 1870 | 1911 | Rio Grande Railway |
| Rio Grande Railway | MP | 1911 | 1926 | Port Isabel and Rio Grande Valley Railway |
| Rio Grande City Railway | MP | 1924 | 1956 | Missouri Pacific Railroad |
| Rio Grande and Eagle Pass Railway | 1885 | 1947 | N/A |
| Rio Grande and El Paso Railroad | ATSF | 1880 | 1914 | Rio Grande, El Paso and Santa Fe Railroad |
| Rio Grande, El Paso and Santa Fe Railroad | ATSF | 1914 | 1994 | Atchison, Topeka and Santa Fe Railway |
| Rio Grande, Micolithic and Northern Railway | 1926 | 1929 | N/A |
| Rio Grande Northern Railroad | 1893 | 1897 | N/A |
| Rio Grande and Pecos Railway | 1882 | 1884 | Rio Grande and Eagle Pass Railway |
| Rio Valley Railroad | RVRR | 1993 | Still exists as a lessor of the Rio Valley Switching Company |
| Riverside and Gulf Railway | 1907 | 1913 | Union Lumber Company |
| Riviera Beach and Western Railway | 1912 | 1917 | N/A |
| Roby and Northern Railroad | 1915 | 1941 | N/A |
| Roscoe, Snyder and Pacific Railway | RS&P, RSP | 1906 | 1984 | N/A |
| Rusk Transportation Company | SSW | 1874 | 1879 | Kansas and Gulf Short Line Railroad |
| Sabine and East Texas Railway | SP | 1881 | 1882 | Texas and New Orleans Railroad |
| Sabine Pass and East Texas Railway | 1858 | 1861 | [https://tshaonline.org/handbook/online/articles/fed05] Removed tracks in 1860s. |
| Sabine and Galveston Bay Railroad and Lumber Company | SP | 1856 | 1859 | Texas and New Orleans Railroad |
| Sabine and Neches Valley Railway | 1921 | 1944 | N/A |
| Sabine Pass, Alexandria and Northwestern Railway | 1892 | 1901 | N/A |
| St. Louis, Arkansas and Texas Railway in Texas | SSW | 1886 | 1891 | St. Louis Southwestern Railway of Texas, Tyler Southeastern Railway |
| St. Louis, Brownsville and Mexico Railway | SB&M, SBM | MP | 1903 | 1956 | Missouri Pacific Railroad |
| St. Louis – San Francisco Railway | SLSF | SLSF | 1964 | 1980 | Burlington Northern Inc. |
| St. Louis, San Francisco and Texas Railway | SLSF | 1900 | 1964 | St. Louis – San Francisco Railway |
| St. Louis Southwestern Railway | SSW | SSW | 1954 | 1997 | Union Pacific Railroad |
| St. Louis Southwestern Railway of Texas | SSW | SSW | 1891 | 1984 | St. Louis Southwestern Railway |
| San Antonio and Aransas Pass Railway | SAAP | SP | 1884 | 1934 | Texas and New Orleans Railroad |
| San Antonio Belt and Terminal Railway | MKT | 1912 | 1989 | Missouri–Kansas–Texas Railroad |
| San Antonio, Fredericksburg and Northern Railway | 1913 | 1917 | Fredericksburg and Northern Railway |
| San Antonio and Gulf Railroad | SP | 1897 | 1905 | Galveston, Harrisburg and San Antonio Railway |
| San Antonio and Gulf Shore Railway | SP | 1893 | 1896 | San Antonio and Gulf Railroad |
| San Antonio and Mexican Gulf Railroad | SP | 1850 | 1871 | Gulf, Western Texas and Pacific Railway |
| San Antonio Southern Railway | MP | 1920 | 1956 | Missouri Pacific Railroad |
| San Antonio, Uvalde and Gulf Railroad | MP | 1912 | 1956 | Missouri Pacific Railroad |
| San Benito and Rio Grande Valley Railway | SB&R | MP | 1912 | 1956 | Missouri Pacific Railroad |
| San Benito and Rio Grande Valley Interurban Railway | MP | 1912 | 1912 | San Benito and Rio Grande Valley Railway |
| San Diego and Gulf Railway | NDM | 1929 | 1935 | N/A |
| Sanford and Northern Railway | 1931 | | N/A |
| Seagraves, Whiteface and Lubbock Railroad | SWGR | 1990 | 1995 | West Texas and Lubbock Railroad |
| Sherman, Denison and Dallas Railway | MKT | 1890 | 1891 | Missouri, Kansas and Texas Railway |
| Sherman, Shreveport and Southern Railway | MKT | 1893 | 1901 | Missouri, Kansas and Texas Railway of Texas |
| Shreveport, Houston and Gulf Railroad | 1906 | 1936 | N/A |
| South Galveston and Gulf Shore Railroad | 1891 | 1895 | N/A |
| South Orient Railroad | SO | 1992 | 2001 | Texas Pacifico Transportation |
| South Plains and Santa Fe Railway | ATSF | 1916 | 1948 | Panhandle and Santa Fe Railway |
| Southern Kansas Railway of Texas | ATSF | 1886 | 1914 | Panhandle and Santa Fe Railway |
| Southern Pacific Company | SP | SP | 1934 | 1969 | Southern Pacific Transportation Company |
| Southern Pacific Company | SP | 1885 | 1889 | N/A |
| Southern Pacific Railroad | MP | 1856 | 1872 | Texas and Pacific Railway |
| Southern Pacific Terminal Company | SP | 1901 | 1962 | Southern Pacific Company |
| Southern Pacific Transportation Company | SP | SP | 1969 | 1998 | Union Pacific Railroad |
| Southern Trans-Continental Railway | MP | 1870 | 1872 | Texas Pacific Railroad |
| Southwestern Railroad | SW | 1990 | 2006 | N/A |
| Southwestern Railway | 1907 | 1920 | N/A |
| Stamford and Northwestern Railway | CB&Q | 1909 | 1952 | Fort Worth and Denver Railway |
| Stephenville North and South Texas Railway | SSW | 1907 | 1941 | N/A |
| Sugar Land Railway | SL | MP | 1893 | 1956 | Missouri Pacific Railroad |
| Taylor, Bastrop and Houston Railway | MKT | 1886 | 1886 | Missouri, Kansas and Texas Railway |
| Texarkana and Fort Smith Railway | KCS | 1889 | 1943 | Kansas City Southern Railway |
| Texarkana and Northern Railway | KCS | 1885 | 1889 | Texarkana and Fort Smith Railway |
| Texarkana Union Station Trust | TUST | KCS/ MP/ SSW | 1927 | |
| Texas, Arkansas and Louisiana Railway | 1897 | 1920 | N/A |
| Texas Central Railroad | TEXC | MKT | 1892 | Still exists as a lessor of the Fort Worth and Western Railroad |
| Texas Central Railway | MKT, SP | 1879 | 1891 | Texas Central Railroad, Texas Midland Railroad |
| Texas City Terminal Company | 1898 | 1921 | Texas City Terminal Railway |
| Texas City Terminal Railway | 1893 | 1897 | Texas City Terminal Company |
| Texas City Transportation Company | 1904 | 1920 | Texas City Terminal Railway |
| Texas Export Railroad | TXRC | 1972 | 1976 | N/A |
| Texas and Gulf Railway | ATSF | 1904 | 1948 | Gulf, Colorado and Santa Fe Railway |
| Texas and Louisiana Railroad | SSW | 1900 | 1903 | St. Louis Southwestern Railway of Texas |
| Texas, Louisiana and Eastern Railroad | ATSF | 1891 | 1897 | Gulf, Colorado and Santa Fe Railway |
| Texas Mexican Railway | TM | NDM | 1881 | Still exists as a nonoperating subsidiary of the Kansas City Southern Railway |
| Texas Mexican Northern Railway | NDM | 1882 | 1906 | Texas Mexican Railway |
| Texas Midland Railroad | SP | 1892 | 1934 | Texas and New Orleans Railroad |
| Texas – New Mexico Railway | TNM | MP | 1927 | 1978 | Missouri Pacific Railroad |
| Texas and New Orleans Railroad | T&NO, TNO | SP | 1859 | 1961 | Southern Pacific Company |
| Texas and Northeastern Railway | 1900 | 1901 | N/A |
| Texas Northern Railway | 1908 | 1908 | Groveton, Lufkin and Northern Railway |
| Texas Pacific Railroad | MP | 1871 | 1872 | Texas and Pacific Railway |
| Texas and Pacific Railway | T&P, TP | MP | 1872 | 1976 | Missouri Pacific Railroad |
| Texas and Sabine Valley Railway | ATSF | 1892 | 1904 | Texas and Gulf Railway |
| Texas, Sabine Valley and Northwestern Railway | ATSF | 1887 | 1904 | Texas and Gulf Railway |
| Texas and St. Louis Railway in Texas | SSW | 1879 | 1886 | St. Louis, Arkansas and Texas Railway in Texas |
| Texas Short Line Railway | MP | 1901 | 1962 | N/A |
| Texas Southern Railway | 1897 | 1908 | Marshall and East Texas Railway |
| Texas State Railroad | SP | 1907 | 1969 | N/A | Continued as a tourist railroad |
| Texas Transportation Company | TXTC | 1897 | 2000 | N/A |
| Texas Transportation Company | SP | 1866 | 1896 | Texas and New Orleans Railroad |
| Texas Trunk Railroad | SP | 1879 | 1895 | Texas and New Orleans Railroad |
| Texas Western Railroad | MP | 1852 | 1856 | Southern Pacific Railroad |
| Texas Western Railway | 1881 | 1896 | N/A |
| Texas Western Narrow Gauge Railway | 1875 | 1881 | Texas Western Railway |
| Timpson and Henderson Railway | 1909 | 1923 | N/A |
| Timpson and Northwestern Railway | 1901 | 1909 | Timpson and Henderson Railway |
| Trinity and Brazos Valley Railway | CB&Q/ RI | 1902 | 1930 | Burlington – Rock Island Railroad |
| Trinity, Cameron and Western Railroad | MKT | 1892 | 1902 | Granger, Georgetown, Austin and San Antonio Railway |
| Trinity and Sabine Railway | MKT | 1881 | 1882 | Missouri, Kansas and Texas Railway |
| Trinity Valley Railroad | 1899 | 1901 | Trinity Valley Southern Railroad |
| Trinity Valley and Northern Railway | 1906 | 1932 | N/A |
| Trinity Valley Southern Railroad | 1901 | 1936 | N/A |
| Tyler Southeastern Railway | SSW | 1891 | 1899 | St. Louis Southwestern Railway of Texas |
| Tyler Tap Railroad | SSW | 1871 | 1879 | Texas and St. Louis Railway in Texas |
| Union Passenger Depot Company of Galveston | ATSF | 1897 | 1957 | Gulf, Colorado and Santa Fe Railway |
| Union Terminal Company | ATSF/ CB&Q/ MKT/ MP/ RI/ SLSF/ SSW/ SP | 1912 | 1974 | Atchison, Topeka and Santa Fe Railway, Chicago, Rock Island and Pacific Railroad, Fort Worth and Denver Railway, Missouri–Kansas–Texas Railroad, St. Louis – San Francisco Railway, St. Louis Southwestern Railway, Southern Pacific Transportation Company, Texas and Pacific Railway (one-eighth interest each in trackage) |
| Uvalde and Northern Railway | 1914 | 1941 | N/A |
| Velasco, Brazos and Northern Railway | MP | 1901 | 1906 | Houston and Brazos Valley Railway |
| Velasco Terminal Railway | MP | 1891 | 1901 | Velasco, Brazos and Northern Railway |
| Victoria and Columbia Railroad | MP | 1866 | 1873 | Houston and Great Northern Railroad |
| Waco, Beaumont, Trinity and Sabine Railway | 1923 | 1959 | N/A |
| Waco and Northwestern Railroad | SP | 1870 | 1873 | Houston and Texas Central Railway |
| Waco Tap Railroad | SP | 1866 | 1870 | Waco and Northwestern Railroad |
| Warren Central Railroad | SP | 1930 | 1934 | Texas and New Orleans Railroad |
| Warren and Corsicana Pacific Railway | 1899 | 1908 | N/A |
| Washington County Railroad | SP | 1856 | 1868 | Houston and Texas Central Railway |
| Waxahachie Tap Railroad | SP | 1875 | 1881 | Central Texas and Northwestern Railway |
| Weatherford, Mineral Wells and Northwestern Railway | WM&N, WMWN | MP | 1889 | 1988 | Missouri Pacific Railroad |
| West Texas and Lubbock Railroad | WTLR | 1995 | Still exists as a lessor of the West Texas and Lubbock Railway |
| Western Narrow Gauge Railway | 1870 | 1875 | Texas Western Narrow Gauge Railway |
| Wichita Falls Railway | MKT | 1894 | 1969 | Missouri–Kansas–Texas Railroad |
| Wichita Falls and Northwestern Railway of Texas | MKT | 1906 | 1923 | Missouri–Kansas–Texas Railroad |
| Wichita Falls and Oklahoma Railway | CB&Q | 1903 | 1942 | N/A |
| Wichita Falls, Ranger and Fort Worth Railroad | MKT | 1919 | 1940 | Wichita Falls and Southern Railroad |
| Wichita Falls and Southern Railroad | MKT | 1920 | 1955 | Chicago, Rock Island and Pacific Railroad |
| Wichita Falls and Southern Railway | MKT | 1907 | 1940 | Wichita Falls and Southern Railroad |
| Wichita Falls and Wellington Railway of Texas | MKT | 1910 | 1958 | N/A |
| Wichita Valley Railroad | CB&Q | 1905 | 1952 | Fort Worth and Denver Railway |
| Wichita Valley Railway | WV | CB&Q | 1890 | 1952 | Fort Worth and Denver Railway |
1. ^This is one or more of the Class I railroads that the railroad became part of, if any.