| Election Date: | 8 May 1986 |
| Election Name: | 1986 Southwark Council election |
| Type: | parliamentary |
| Ongoing: | no |
| Party Colour: | Labour Party (UK) |
| Previous Year: | 1982 |
| Previous Election: | 1982 Southwark London Borough Council election |
| Next Election: | 1990 Southwark London Borough Council election |
| Next Year: | 1990 |
| Seats For Election: | All council seats |
| Party1: | Labour Party (UK) |
| Seats1: | 43 |
| Seat Change1: | 10 |
| Popular Vote1: | 32,906 |
| Percentage1: | 50.68% |
| Party2: | SDP-Liberal Alliance |
| Seats2: | 15 |
| Seat Change2: | 15 |
| Popular Vote2: | 18,696 |
| Percentage2: | 28.8% |
| Council Control | |
| Before Party: | Labour Party (UK) |
| Posttitle: | Council Control |
| After Party: | Labour Party (UK) |
| Party3: | Conservative Party (UK) |
| Seats3: | 6 |
| Seat Change3: | 2 |
| Popular Vote3: | 11,726 |
| Percentage3: | 18.06% |
| Swing1: | 7.93 |
| Swing2: | 4.46 |
| Swing3: | 9.89 |
Elections to Southwark Council were held in May 1986. The whole council was up for election. Turnout was 36.7%.
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Graeme Geddes was a sitting councillor for Browning ward
Jessica Wanamaker was a sitting councillor for Chaucer ward
Ann Goss was a sitting councillor for The Lane ward
Rupert Doyle was a sitting councillor for Friary ward
Tony Goss was a sitting councillor for Newington ward
Tobias Eckersley was a sitting councillor for Ruskin ward
Elsie Headley was a sitting councillor for Alleyn ward
Leslie Alden was a sitting councillor for St Giles ward
Richard Clough was a sitting councillor for Rye ward
The by-election was called following the resignation of Cllr. George Walker
The by-election was called following the resignation of Cllr. Ali Balli
The by-election was called following the resignation of Cllr. Elsie Headley
The by-election was called following the resignation of Cllr. Linda Oram
The by-election was called following the resignation of Cllr. Joan Price
The by-election was called following the resignation of Cllr. Kenneth Carlisle
The by-election was called following the resignation of Cllr. Alan Crane
The by-election was called following the resignation of Cllr. David Main