| Haughton Lennox | |
| Smallimage: | Haughton Lennox.jpg |
| Constituency Mp: | Simcoe South |
| Parliament: | Canadian |
| Predecessor: | Richard Tyrwhitt |
| Successor: | William Alves Boys |
| Term Start: | 1900 |
| Term End: | 1912 |
| Birth Date: | 28 February 1850 |
| Birth Place: | Innisfil Township, Canada West |
| Party: | Conservative |
Haughton Lennox (February 28, 1850 - July 26, 1927) was a Canadian politician.
Born in Innisfil Township, Canada West, the son of William Lennox and Maria Haughton, Lennox was educated at the Public and Grammar Schools of Barrie. A lawyer, he was first elected to the House of Commons of Canada for the Ontario electoral district of Simcoe South in the general elections of 1900. A Conservative, he was re-elected in 1904, 1908, and 1911.