Elections to Southwark Council were held in May 1978. The whole council was up for election. Turnout was 28.7%. There were now 25 wards rather than the previous 23 and 64 councillors rather than 70.
| Southwark Local Election Result 1978[1] | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Party | Seats | Gains | Losses | Net gain/loss | Seats % | Votes % | Votes | +/- | ||
| Labour | 56 | -10 | 57.6 | |||||||
| Conservative | 8 | +4 | 36.4 | |||||||
| Liberal | 0 | 3.8 | ||||||||
| Preceded by Southwark Council election, 1974 |
Southwark local elections | Succeeded by Southwark Council election, 1982 |