| Election Name: | 2015 Winchester City Council election |
| Percentage1: | 49.11 |
| Seats After1: | 33 |
| After Election: | Conservative |
| Before Election: | No Overall Control |
| Posttitle: | Council control after election |
| Council control | |
| Percentage2: | 29.27 |
| Popular Vote2: | 16,534 |
| Seats Before2: | 25 |
| Seat Change2: | 4 |
| Seats2: | 4 |
| Party2: | Liberal Democrats (UK) |
| Popular Vote1: | 27,734 |
| Country: | England |
| Next Year: | 2016 |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 2014 Winchester City Council election |
| Previous Year: | 2014 |
| Next Election: | 2016 Winchester City Council election |
| Seats For Election: | 20 of the 57 seats to Winchester City Council |
| Seats Before1: | 28 |
| Majority Seats: | 29 |
| Election Date: | 7 May 2015 |
| Party1: | Conservative Party (UK) |
| Seats1: | 16 |
| Seat Change1: | 6 |
| Seats After2: | 22 |
The 2015 Winchester City Council election took place on 7 May 2015 to elect members of Winchester City Council in England.[1] In total, 20 out of 57 council seats were up for election. The Conservatives gained majority control of Winchester City Council from No Overall Control, following the defection of two former Conservative councillors to the Liberal Democrats in 2014.[2]
After the election, the composition of Winchester City Council was:[3]