| Election Name: | 2003 Portsmouth City Council election |
| Popular Vote1: | 13,281 |
| After Election: | No overall control |
| Posttitle: | Council control after election |
| Ongoing: | no |
| Previous Election: | 2002 Portsmouth City Council election2002Portsmouth City Council election |
| Previous Year: | 2002 |
| Election Date: | 1 May 2003 |
| Seats1: | 16 |
| Type: | Parliamentary |
| Party1: | Liberal Democrats (UK) |
| Country: | Portsmouth |
| Before Election: | No overall control |
| Council control | |
| Party Colour: | yes |
| Next Election: | 2004 Portsmouth City Council election |
| Seats For Election: | 14 of 42 seats to Portsmouth City Council |
| Majority Seats: | 22 |
| Popular Vote2: | 13,738 |
| Seats2: | 15 |
| Party2: | Conservative Party (UK) |
| Popular Vote3: | 9,798 |
| Seats3: | 11 |
| Party3: | Labour Party (UK) |
| Next Year: | 2004 |
Elections to Portsmouth City Council were held on 1 May 2003. One third of the council was up for election and the council stayed under no overall control. Overall turnout was 26.6%.
After the election, the composition of the council was: