| Lostwithiel | |
|---|---|
| Former borough constituency for the House of Commons | |
| 1304–1832 | |
| Seats | Two |
| Replaced by | East Cornwall |
Lostwithiel was a rotten borough in Cornwall which returned two Members of Parliament to the House of Commons in the English and later British Parliament from 1304 to 1832, when it was abolished by the Great Reform Act.