The 1977–78 Southern Football League season saw Bath City win the Premier Division. Minehead, Dover, Bedford Town and Grantham were relegated from the Premier Division, whilst Witney Town, Margate, Bridgend Town and Dorchester Town were all promoted to the Premier Division, the former two as champions. Romford folded at the end of the season.
Contents
Premier Division
The Premier Division featured four new clubs:
Football League elections
At the end of the season, the bottom four of the Football League had to be re-elected to retain their place, with one club from each of the Southern League and Northern Premier League also on the ballot. Champions Bath City participated in the vote, but finished bottom. NPL club Wigan Athletic were elected to the League after beating Southport in a second round of voting.
Division One North
Division One North featured three new clubs, all of which had been relegated from the Premier Division the previous season:
Division One South
Division One South featured five new clubs: