1919–20 Southern Football League

The 1919–20 season was the 22nd in the history of the Southern League, and the first following World War I. Portsmouth won the Southern League championship for the second time, whilst Mid Rhondda won Division Two. There were no promotions or relegations between divisions at the end of the season as all of the clubs in Division One bar Cardiff City were elected to the new Division Three of the Football League, with Cardiff elected to Division Two.

1919–20 Southern Football League

The 1919–20 season was the 22nd in the history of the Southern League, and the first following World War I. Portsmouth won the Southern League championship for the second time, whilst Mid Rhondda won Division Two. There were no promotions or relegations between divisions at the end of the season as all of the clubs in Division One bar Cardiff City were elected to the new Division Three of the Football League, with Cardiff elected to Division Two.