| Election Name: | 2005 Wiltshire County Council election |
| Country: | Wiltshire |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 2001 Wiltshire County Council election |
| Previous Year: | 2001 |
| Seats For Election: | All 49 seats to Wiltshire County Council |
| Majority Seats: | 25 |
| Image1: | Con |
| Party1: | Conservative Party (UK) |
| Last Election1: | 28 seats, 43.7% |
| Seats1: | 28 |
| Popular Vote1: | 101,000 |
| Percentage1: | 41.9% |
| Swing1: | 1.8% |
| Party2: | Liberal Democrats (UK) |
| Last Election2: | 14 seats, 33.7% |
| Seats2: | 16 |
| Seat Change2: | 2 |
| Popular Vote2: | 88,500 |
| Percentage2: | 36.5% |
| Swing2: | 2.8% |
| Image3: | Lab |
| Last Election3: | 3 seats, 16.9% |
| Party3: | Labour Party (UK) |
| Seats3: | 2 |
| Seat Change3: | 1 |
| Popular Vote3: | 35,500 |
| Percentage3: | 14.5% |
| Swing3: | 2.4% |
| Image4: | Ind |
| Last Election4: | 2 seats, 2.2% |
| Party4: | Independent (politician) |
| Seats4: | 2 |
| Popular Vote4: | 10,700 |
| Percentage4: | 4.5% |
| Swing4: | 2.3% |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Conservative |
| After Election: | Conservative |
Elections to Wiltshire County Council were held on 5 May 2005, with the whole council up for election. They proved to be the last to the original county council, as the elections four years later were the first to its successor, the new Wiltshire Council unitary authority.
Most electoral divisions had boundary changes, and several were new, including three new two-member divisions, in Salisbury and Trowbridge.
As with other county elections in England, these local elections in Wiltshire took place on the same day as the 2005 United Kingdom general election. The previous 2001 Wiltshire Council election, had also coincided with the 2001 general election.
The result was that the Conservatives held onto control.
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