| Election Name: | 2003 Northampton Borough Council election |
| Country: | England |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 1999 Northampton Borough Council election |
| Previous Year: | 1999 |
| Next Election: | 2007 Northampton Borough Council election |
| Next Year: | 2007 |
| Seats For Election: | All 45 seats in the Northampton Borough Council |
| Majority Seats: | 23 |
| Election Date: | 1 May 2003 |
| Party1: | Conservative Party (UK) |
| Last Election1: | 8 |
| Seats1: | 19 |
| Seat Change1: | 11 |
| Popular Vote1: | 33,122 |
| Percentage1: | 37.2 |
| Party2: | Liberal Democrats (UK) |
| Last Election2: | 11 |
| Seats2: | 17 |
| Seat Change2: | 6 |
| Popular Vote2: | 31,199 |
| Percentage2: | 35.0 |
| Party3: | Labour Party (UK) |
| Last Election3: | 28 |
| Seats3: | 11 |
| Seat Change3: | 17 |
| Popular Vote3: | 22,764 |
| Percentage3: | 25.6 |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Labour |
| After Election: | No overall control |
Elections to Northampton Borough Council were held on 1 May 2003. The whole council was up for election and the Labour Party lost overall control of the council to no overall control.
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