| John Fergus | |
| Office: | Member of Parliament for Fife |
| Term Start: | 12 August 1847 |
| Term End: | 5 May 1859 |
| Predecessor: | James Erskine Wemyss |
| Successor: | James Hay Erskine Wemyss |
| Office2: | Member of Parliament for Kirkcaldy Burghs |
| Term Start2: | 14 January 1835 |
| Term End2: | 26 July 1837 |
| Predecessor2: | Robert Ferguson |
| Successor2: | Robert Ferguson |
| Death Date: | 23 January 1865 |
| Nationality: | British |
| Party: | Whig |
John Fergus (– 23 January 1865)[1] [2] was a British Whig politician.
Fergus was first elected Whig MP for Kirkcaldy Burghs at the 1835 general election and held the seat until 1837 when he did not seek re-election. He returned to parliament as an MP for Fife in 1847, holding the seat until 1859, when he retired.[3]