Lanark—Carleton was a provincial electoral district (or riding) in Ontario. It existed for the 1999 and 2003 Ontario general elections. The riding was created when Ontario's electoral districts were re-drawn to match its federal counterparts. It was created out of parts of Carleton and Lanark-Renfrew. It was abolished into Carleton—Mississippi Mills, Lanark—Frontenac—Lennox and Addington and a small piece going to Ottawa West—Nepean. The riding consisted of Lanark County and the municipalities of West Carleton and Kanata, which were both amalgamated into Ottawa in 2001.

Members of Provincial Parliament

Election results