William Cusano (October 19, 1943 – November 14, 2012) was an Italian-born former politician in Quebec, Canada. He was a member of the National Assembly of Quebec from 1981 to 2007. Born in Sepino-Campobasso, Italy, Cusano and his family moved to Canada in 1952. He has a Bachelor of Arts from Loyola College as well as from the Université de Montréal in education and was a teacher and director for several schools in the Montreal region from 1962 to 1979. During Jean Charest's First Mandate, he was named the National Assembly's First Vice-President. He died in 2012 of complications from surgery.