| James Rust | |
| Office: | Member of Parliament for Huntingdonshire |
| Term Start: | 2 October 1855 |
| Term End: | 7 May 1859 |
| Alongside: | Edward Fellowes John Heathcote (April – July 1857) |
| Predecessor: | Edward Fellowes William Montagu |
| Successor: | Edward Fellowes Robert Montagu |
| Birth Date: | 1798 |
| Nationality: | British |
| Party: | Conservative |
James Rust (1798 – 24 July 1875)[1] was a British Conservative politician.
Rust was first elected Conservative MP for Huntingdonshire at a by-election in 1855—caused by the succession of William Montagu to 7th Duke of Manchester. He was again elected at the 1857 general election, although the vote unusually resulted in a triple return with his fellow incumbent Conservative MP Edward Fellowes securing the same number of votes as the Whig cricketer John Heathcote. After scrutiny, Heathcote was declared unduly elected a few months later.[2] Rust held the seat until the 1859 general election when he did not stand.[3]