| South West Lancashire | |
|---|---|
| Former county constituency for the House of Commons | |
| County | Lancashire |
| 1868–1885 | |
| Seats | Two |
| Created from | South Lancashire |
| Replaced by | Bootle, Ince, Leigh, Newton, Ormskirk, St Helens, Southport and Widnes. |
South West Lancashire was a county constituency of the House of Commons of the Parliament of the United Kingdom. It was represented by two Members of Parliament. The constituency was created by the Reform Act of 1867 by the splitting of the South Lancashire constituency into new South-East and South-West divisions.
The constituency was abolished by the Redistribution of Seats Act 1885, being divided into eight single member divisions of Bootle, Ince, Leigh, Newton, Ormskirk, St Helens, Southport and Widnes.