| Election Name: | 2018 Winchester City Council election |
| Country: | England |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 2016 Winchester City Council election |
| Previous Year: | 2016 |
| Next Election: | 2019 Winchester City Council election |
| Next Year: | 2019 |
| Seats For Election: | 15 of the 45 seats to Winchester City Council |
| Majority Seats: | 23 |
| Election Date: | 3 May 2018 |
| Party1: | Conservative Party (UK) |
| Seats1: | 6 |
| Seat Change1: | -2 |
| Seats Before1: | 25 |
| Popular Vote1: | 17,660 |
| Percentage1: | 47.2 |
| Party2: | Liberal Democrats (UK) |
| Seats2: | 9 |
| Seat Change2: | +2 |
| Seats Before2: | 20 |
| Popular Vote2: | 15,417 |
| Percentage2: | 41.2 |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Conservative |
| After Election: | Conservative |
| Seats After1: | 23 |
| Seats After2: | 22 |
Elections to Winchester City Council took place on 3 May 2018. This was on the same day as other local elections across the United Kingdom.[1] [2]
An election was not held this year in St Luke as it is a two-member ward, with both seats previously having been up for election with the 2016 Election, and one of the seats next up for the election in 2019. Colden Common and Twyford is similarly a two-member ward, but did hold an election this time.
A by-election was held in Upper Meon Valley ward on 20 September 2018 after the resignation of Councillor Amber Tresahar.