| Election Name: | 2011 Test Valley Borough Council election |
| After Election: | Conservatives |
| Majority Seats: | 24 |
| Party2: | Liberal Democrats (UK) |
| Seats For Election: | All 48 seats to Test Valley Borough Council |
| Next Year: | 2015 |
| Next Election: | 2015 Test Valley Borough Council election |
| Previous Year: | 2007 |
| Previous Election: | 2007 Test Valley Borough Council election |
| Type: | Parliamentary |
| Last Election2: | 15 |
| Seat Change1: | 3 |
| Election Date: | 5 May 2011 |
| Before Election: | Conservatives |
| Posttitle: | Council control after election |
| Council control | |
| Percentage1: | 51.82% |
| Popular Vote1: | 22,598 |
| Seats1: | 36 |
| Last Election1: | 33 |
| Party1: | Conservative Party (UK) |
| Percentage2: | 28.90% |
| Popular Vote2: | 12,607 |
| Seat Change2: | 3 |
| Seats2: | 12 |
Elections to Test Valley Borough Council were held on 5 May 2011, the same day as the 2011 United Kingdom Alternative Vote referendum. The Conservatives maintained control of the council, with an increased majority.[1]
Before the election, the council consisted of 33 Conservatives, 14 Liberal Democrats and 1 Independent.
Only the Conservatives contested all 48 seats. The Liberal Democrats contested 43 seats, while Labour contested 14, the UK Independence Party 7 and the Greens 2. There were also 3 independent candidates. Two wards, Bourne Valley and Over Wallop, were uncontested, meaning the Conservative candidates were elected by default.
Despite all 48 seats being up for election, only three changed hands: The Conservatives gained two seats in Andover, both from the Liberal Democrats, and, in the Abbey Ward of Romsey, defeated Independent Sally Lamb, who had been previously elected as a Liberal Democrat.|-bgcolor=#F6F6F6| colspan=2 style="text-align: right; margin-right: 1em" | Total| style="text-align: right;" | 48| colspan=5 || style="text-align: right;" | 43608| style="text-align: right;" ||-