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.