Maurice Hartt, KC (April 15, 1895 – March 15, 1950) was a Romanian-born Canadian politician.

Born in Dorohoi, Romania, the son of Saul Hartt and Malia Segal, he immigrated to Canada when he was twelve.

He resigned in 1947, when he was elected to the House of Commons of Canada in the riding of Cartier in a 1947 by-election called when Fred Rose's seat was declared vacant by a resolution of the House of Commons.

His son, Stanley Hartt, was Prime Minister Brian Mulroney's Chief of Staff from 1989 to 1990.

Another son, Joel Hartt (1940–2009), was a professor of Humanities at John Abbott College and Chairman of the Lakeshore School Board.