Farsajin or Farsijin or Farsagin or Farsejin or Farsjin or Parsadzhin ({{lang-fa|فارسجين}}) may refer to:

• Farsejin, Hamadan
• Farsajin, Qazvin

• The 1867 Flood of Chattanooga
• The 1867 flood of Chattanooga
• The 1885 Hangings at Battleford
• The 18 parvas
• The 1910 Georgia Bulldogs football team
• The 1916-17 Washington State Cougars men's basketball team
• The 1916-17 Washington State men's basketball team
• The 1916–17 Washington State Cougars men's basketball team
• The 1916–17 Washington State men's basketball team
• The 1919 International Congress of Working Women
• The 1926 General Strike
• The 1930s in Soviet Russia
• The 1930's in Soviet Russia
• The 1947 Five Nations Championship
• The 1958 Lituya Bay, Alaska earthquake and megatsunami
• The 1961-62 American Soccer League
• The 1961–62 American Soccer League
• The 1966 Live Recordings
• The 1966 Live Recordings (Album)
• The 1967 anti-Chinese riots in Burma
• The 1967 National Football League Championship Game
• The 1975 (2013 song)
• The 1975 (2016 song)
• The 1975 (2018 song)
• The 1975 (song)