| Election Name: | 1990 Westminster City Council election |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1986 Westminster City Council election |
| Previous Year: | 1986 |
| Next Election: | 1994 Westminster City Council election |
| Next Year: | 1994 |
| Seats For Election: | All 60 council seats of the Westminster City Council |
| Majority Seats: | 31 |
| Election Date: | 3 May 1990 |
| Turnout: | 55,648, 51.53% |
| Leader1: | Shirley Porter |
| Party1: | Conservative Party (UK) |
| Seats1: | 45 |
| Seat Change1: | 13 |
| Popular Vote1: | 77,054 |
| Percentage1: | 53.99% |
| Leader2: | Unknown |
| Party2: | Labour Party (UK) |
| Seats2: | 15 |
| Seat Change2: | 12 |
| Popular Vote2: | 54,229 |
| Percentage2: | 37.99% |
| Council control | |
| Posttitle: | Subsequent council control |
| Before Party: | Conservative Party (UK) |
| After Party: | Conservative Party (UK) |
| Party3: | Liberal Democrats (UK) |
| Popular Vote3: | 7,894 |
| Percentage3: | 5.53% |
| Seats3: | 0 |
| Country: | London |
| Registered: | 107,989[1] |
| Leaders Seat1: | Hyde Park |
| Leader Since1: | 1983 |
| Leaders Seat2: | Unknown |
| Leader Since2: | Unknown |
| Leader3: | Unknown |
| Leaders Seat3: | Unknown |
| Leader Since3: | Unknown |
| Seats Before1: | 32 |
| Seats Before2: | 27 |
| Seats Before3: | 0 |
The 1990 Westminster Council election took place on 3 May 1990 to elect members of Westminster City Council in London, England. The whole council was up for election and the Conservative Party stayed in overall control of the council.[2]
(*) - Indicates an incumbent candidate
(†) - Indicates an incumbent councillor who is running in a different seat than the one they were elected