The 1979–80 Football League season was Birmingham City Football Club's 77th in the Football League and their 32nd in the Second Division, to which they were relegated in 1978–79. They finished in third position in the 22-team division, level on points with Chelsea but with a better goal difference, so were promoted to the First Division for 1980–81. They entered the 1979–80 FA Cup in the third round proper and lost to Tottenham Hotspur in the fifth, and were eliminated from the third round of the League Cup by Exeter City. They also entered the Anglo-Scottish Cup, but failed to progress past the group stage.