Harry Slater (May 24, 1863 – January 11, 1936) was a Canadian politician.
Born in Portsmouth, England, Slater emigrated to Quebec in 1890 where he worked as a bookkeeper for the Montreal company Moffat Blocking before becoming president of Lachute Knitting.
He ran unsuccessfully for the Legislative Assembly of Quebec for the riding of Argenteuil in a 1910 by-election.
He ran unsuccessfully for the House of Commons of Canada in 1917 losing to Peter Robert McGibbon.
This article about a Members of the National Assembly of Quebec from the Conservative Party of Quebec is a stub.