| Election Name: | 1986 Barnet London Borough Council election |
| Type: | Parliamentary |
| Previous Election: | 1982 Barnet London Borough Council election |
| Previous Year: | 1982 |
| Next Election: | 1990 Barnet London Borough Council election |
| Next Year: | 1990 |
| Election Date: | 8 May 1986 |
| Seats For Election: | All 60 seats to Barnet London Borough Council |
| Majority Seats: | 31 |
| Turnout: | 42.0% |
| Party1: | Conservative Party (UK) |
| Seats1: | 39 |
| Seat Change1: | 9 |
| Percentage1: | 44.0% |
| Party2: | Labour Party (UK) |
| Seats2: | 18 |
| Seat Change2: | 6 |
| Percentage2: | 30.9% |
| Party3: | SDP-Liberal Alliance |
| Seats3: | 3 |
| Seat Change3: | 3 |
| Percentage3: | 22.9% |
| Map Size: | 340px |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Conservative |
| After Election: | Conservative |
The 1986 Barnet Council election took place on 8 May 1986 to elect members of Barnet London Borough Council in London, England. The whole council was up for election and the Conservative party stayed in overall control of the council.[1]
Overall turnout in the election was 42.0%.|}
The by-election was called following the resignation of Cllr. Beverley G. Lane.
The by-election was called following the resignation of Cllr. Clement Halfon.
The by-election was called following the death of Cllr. Leah Hertz.
The by-election was called following the resignation of Cllr. Coral Sebag-Montefiore.
The by-election was called following the death of Cllr. Wilfred Lipman.