The following are the 2005 United Kingdom general election result in Cornwall.
Contents |
| Party | MPs | +/- | Votes | % | +/-% | |
| Liberal Democrats | 5 | +1 | 115,241 | 44.4 | −0.5 | |
| Conservative Party | 0 | 82,543 | 31.8 | −0.8 | ||
| Labour Party | 0 | −1 | 41,140 | 15.9 | −1.4 | |
| UKIP | 0 | 12,863 | 5.0 | +1.3 | ||
| Mebyon Kernow | 0 | 3,552 | 1.4 | +0.1 | ||
| Green Party | 0 | 1,738 | 0.7 | N/A | ||
| Veritas | 0 | 911 | 0.4 | N/A | ||
| Liberal | 0 | 423 | 0.2 | −0.1 | ||
| Others | 0 | 1,022 | 0.4 | +0.36 | ||
| Constituency | Party | MP | Majority | Result | Swing | |
| Falmouth & Camborne | Liberal Democrat | Julia Goldsworthy | 1,886 | LibDem gain from Lab | 9.5% from Labour to Liberal Democrats | |
| North Cornwall | Liberal Democrat | Dan Rogerson | 3,076 | LibDem hold | 6.4% from Liberal Democrats to Conservative | |
| South East Cornwall | Liberal Democrat | Colin Breed | 6,507 | LibDem hold | 0.9% from Conservative to Liberal Democrats | |
| St Ives | Liberal Democrat | Andrew George | 11,602 | LibDem hold | 1.3% from Conservative to Liberal Democrats | |
| Truro and St Austell | Liberal Democrat | Matthew Taylor | 7,403 | LibDem hold | 0.8% from Liberal Democrats to Conservative | |
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