| Election Name: | 2009 Lancashire County Council election |
| Country: | England |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 2005 Lancashire County Council election |
| Previous Year: | 2005 |
| Next Election: | 2013 Lancashire County Council election |
| Next Year: | 2013 |
| Seats For Election: | All 84 seats to Lancashire County Council |
| Majority Seats: | 43 |
| Election Date: | 4 June 2009 |
| Party1: | Conservative Party (UK) |
| Seats1: | 51 |
| Seat Change1: | 20 |
| Party2: | Labour Party (UK) |
| Seats2: | 16 |
| Seat Change2: | 28 |
| Party3: | Liberal Democrats (UK) |
| Seats3: | 10 |
| Seat Change3: | 4 |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Labour Party |
| After Election: | Conservative |
A whole-council election to Lancashire County Council took place on 4 June 2009 as part of the 2009 United Kingdom local elections. The United Kingdom government department Department for Communities and Local Government consulted on the issue of moving the elections to the same date as the 2009 European Parliament election, which resulted in the council elections being postponed to June to coincide. 84 councillors were elected for 84 divisions by first-past-the-post' for a four-year term of office. Wards were the same as those at the previous election in 2005. Elections are held in all electoral divisions across the present ceremonial county, excepting Blackpool, and Blackburn with Darwen which are unitary authorities in a similar way to Greater Manchester and most of Merseyside.[1]
All locally registered electors (British, Irish, Commonwealth and European Union citizens) who were aged 18 or over on Thursday 4 June 2009 were entitled to vote in the local elections. Those who were temporarily away from their ordinary address (for example, away working, on holiday, in student accommodation or in hospital) were also entitled to vote in the local elections,[2] although those who had moved abroad and registered as overseas electors cannot vote in the local elections. It is possible to register to vote at more than one address (such as a university student who had a term-time address and lives at home during holidays) at the discretion of the local Electoral Register Office, but it remains an offence to vote more than once in the same local government election.[3]
The overall turnout was 37.99% with a total of 336,261 valid votes cast. A total of 3,311 ballots were rejected.
Following the last election in 2005, the composition of the council was:
| 44 | 31 | 6 | 1 | 1 | 1 | |
| Labour | Conservative | Lib Dem | G | I | IT |
After the election, the composition of the council was:
| 51 | 16 | 10 | 3 | 2 | 1 | 1 | |
| Conservative | Labour | Liberal Democrats | I | G | B | IT |
An asterisk (*) denotes an incumbent seeking re-election.