| Election Name: | 1991 Colchester Borough Council election |
| Country: | Essex |
| Type: | parliamentary |
| Previous Election: | 1990 Colchester Borough Council election |
| Previous Year: | 1990 |
| Next Election: | 1992 Colchester Borough Council election |
| Next Year: | 1992 |
| Seats For Election: | 20 out of 60 seats to Colchester Borough Council |
| Majority Seats: | 31 |
| Turnout: | 43.5% (1.9%) |
| Party1: | Liberal Democrats (UK) |
| Last Election1: | 28 seats, 35.4% |
| Seats1: | 10 |
| Seats After1: | 28 |
| Popular Vote1: | 17,518 |
| Percentage1: | 39.9% |
| Swing1: | 4.5% |
| Party2: | Conservative Party (UK) |
| Last Election2: | 17 seats, 30.8% |
| Seats2: | 8 |
| Seats After2: | 19 |
| Seat Change2: | 2 |
| Popular Vote2: | 15,351 |
| Percentage2: | 35.0 |
| Swing2: | 4.2% |
| Party4: | Labour Party (UK) |
| Last Election4: | 12 seats, 29.1% |
| Seats4: | 2 |
| Seats After4: | 11 |
| Seat Change4: | 1 |
| Popular Vote4: | 8,952 |
| Percentage4: | 20.4% |
| Swing4: | 8.7% |
| Party5: | Tiptree Residents Association |
| Last Election5: | 3 seats, 2.4% |
| Seats5: | 0 |
| Seats After5: | 2 |
| Seat Change5: | 1 |
| Popular Vote5: | 740 |
| Percentage5: | 1.7% |
| Swing5: | 0.7% |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | No overall control |
| After Election: | No overall control |
Elections to Colchester Borough Council were held in May 1991.[1] These were on the same day as other Local elections across England and Wales.
No Labour candidate as previous (13.7%).