Denis Lazure (October 12, 1925 – February 23, 2008) was a Canadian politician and a Member of the National Assembly of Quebec (MNA) from 1976 to 1984 and from 1989 to 1996.
He was born on October 12, 1925 in Napierville, Quebec and became a psychiatrist. He is the father of actress Gabrielle Lazure. Lazure attended Université de Montréal and was a doctorate in medicine. He also attended the University of Pennsylvania in psychiatry as well as the University of Toronto in which he was bachelor in hospital administration.
Lazure was the founder of the infant psychiatry department of Saint-Justine Hospital in 1957. He was also the director of this hospital as well as those of Riviere-des-Prairies and Louis-Hippolyte Lafontaine all in the Montreal region. He would later be the director in 1974 of the first psychiatric hospital in Haiti. He was also a teacher at Université de Montréal and was the President of the Canadian Association of Psychiatrists.
Before being a Quebec MNA, Lazure ran twice for a seat in the Canadian House of Commons as a candidate for the New Democratic Party. He finished second in a by-election in the district of Outremont—Saint-Jean in 1967 and finished third in the district of Gamelin in the 1968 federal election.