| District | Vacator | Reason for Vacancy | Candidates |
|---|
| Representative | Party | First elected |
|---|
| AR|6|X}} | Joseph Taylor Robinson | Democratic | 1902 | Incumbent resigned January 14, 1913 to become Governor of Arkansas.
New member elected January 15, 1913, having already been elected to the next term.
Democratic hold. | √ Samuel M. Taylor (Democratic)
{{dm}} |
| Massachusetts|13|X}} | John W. Weeks | Republican | 1902 | Incumbent resigned March 4, 1913, when elected U.S. Senator.
New member elected April 15, 1913.
Democratic gain. | √ John J. Mitchell (Democratic)
{{dm}} |
| Texas|10|X}} | Albert S. Burleson | Democratic | 1898 | Incumbent resigned March 6, 1913 to become U.S. Postmaster General.
New member elected April 15, 1913.
Democratic hold. | √ James P. Buchanan (Democratic)
{{dm}} |
| South Carolina|1|X}} | Vacant | Rep. George S. Legaré died during previous congress.
New member elected April 29, 1913.
Democratic gain. | √ Richard S. Whaley (Democratic)
Unopposed |
| New Jersey|6|X}} | Lewis J. Martin | Democratic | 1912 | Incumbent died May 5, 1913.
New member elected July 22, 1913.
Democratic hold. | √ Archibald C. Hart (Democratic)
{{dm}} |
| Maine|3|X}} | Forrest Goodwin | Republican | 1912 | Incumbent died May 28, 1913.
New member elected September 9, 1913.
Republican hold. | √ John A. Peters (Republican)
{{dm}} |
| West Virginia|1|X}} | John W. Davis | Democratic | 1910 | Incumbent resigned August 29, 1913 to become U.S. Solicitor General.
New member elected October 14, 1913.
Democratic hold. | √ Matthew M. Neely (Democratic)
{{dm}} |
| Georgia|2|X}} | Seaborn Roddenbery | Democratic | 1910 (Special) | Incumbent died September 25, 1913.
New member elected November 4, 1913.
Democratic hold. | √ Frank Park (Democratic)
{{dm}} |
| Maryland|3|X}} | George Konig | Democratic | 1910 | Incumbent died May 31, 1913.
New member elected November 4, 1913.
Democratic hold. | √ Charles P. Coady (Democratic)
{{dm}} |
| Massachusetts|3|X}} | William Wilder | Republican | 1910 | Incumbent died September 11, 1913.
New member elected November 4, 1913.
Republican hold. | √ Calvin Paige (Republican)
{{dm}} |
| New York|13|X}} | Timothy Sullivan | Democratic | 1902
1903 (Resigned)
1912 | Incumbent died August 31, 1913.
New member elected November 4, 1913.
Democratic hold. | √ George W. Loft (Democratic)
{{dm}} |
| New York|20|X}} | Francis B. Harrison | Democratic | 1902
1904 (Retired)
1906 | Incumbent resigned September 1, 1913 to become Governor-General of the Philippines.
New member elected November 4, 1913.
Democratic hold. | √ Jacob A. Cantor (Democratic)
{{dm}} |
{{United States House of Representatives elections}}