1979–80 Southern Football League

The 1979–80 Southern Football League season saw the league split into Midland and Southern Divisions after 13 clubs had left the previous season to establish the Alliance Premier League.Bridgend Town won the Midland Division, whilst Dorchester Town won the Southern Division. Bridgend were declared Southern League champions after defeating Dorchester 3–0 at home and 2–1 away to win a championship play-off. There was no promotion to the Alliance Premier League and no relegation to feeder leagues.

Aside from the four clubs that had left to join the Northern Premier League, the Midland Division was largely based on Division One North from the previous season, with the addition of:

Aside from the three clubs that were transferred to the Midland Division, the Southern Division was largely based on Division One South from the previous season, with the addition of:

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