| Election Name: | 2009 Northamptonshire County Council election[1] |
| Country: | England |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 2005 Northamptonshire County Council election |
| Previous Year: | 2005 |
| Next Election: | 2013 Northamptonshire County Council election |
| Next Year: | 2013 |
| Seats For Election: | All 73 seats in the Northamptonshire County Council |
| Majority Seats: | 37 |
| Election Date: | 4 June 2009 |
| Party1: | Conservative Party (UK) |
| Last Election1: | 45 |
| Seats1: | 56 |
| Seat Change1: | 11 |
| Popular Vote1: | 96,788 |
| Percentage1: | 51.3 |
| Party2: | Liberal Democrats (UK) |
| Last Election2: | 7 |
| Seats2: | 9 |
| Seat Change2: | 2 |
| Popular Vote2: | 39,170 |
| Percentage2: | 20.8 |
| Party3: | Labour Party (UK) |
| Last Election3: | 21 |
| Seats3: | 6 |
| Seat Change3: | 15 |
| Popular Vote3: | 36,685 |
| Percentage3: | 19.5 |
| Party4: | Independent (politician) |
| Seats Before4: | 0 |
| Seats4: | 2 |
| Seat Change4: | 2 |
| Popular Vote4: | 4,159 |
| Percentage4: | 2.2 |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Conservative |
| After Election: | Conservative |
Elections to Northamptonshire County Council took place on 4 June 2009, having been delayed from 7 May, in order to coincide with elections to the European Parliament. The Liberal Democrats replaced the Labour Party as the main opposition.
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