| Horncastle | |
|---|---|
| Former county constituency for the House of Commons | |
| 1885–1983 | |
| Seats | one |
| Created from | Mid Lincolnshire |
| Replaced by | East Lindsey & Gainsborough and Horncastle |
Horncastle was a county constituency in Lincolnshire which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom. MPs were elected by the first past the post system of voting.
The constituency was created by the Redistribution of Seats Act 1885, and first used for the 1885 general election. It was abolished for the 1983 general election.