Cousineau is a surname. Notable people with the surname include:
Claude Cousineau (born 1950), Canadian politician
Guy Cousineau (born 1937), Canadian politician
Léa Cousineau, Canadian politician
Marcel Cousineau (born 1973), Canadian ice hockey player
Philémon Cousineau (1874–1959), Canadian politician
Phil Cousineau (born 1952), American author, screenwriter and filmmaker
René Cousineau (1930–2002), Canadian politician
Tom Cousineau (born 1957), American pro football player
Tony Cousineau, American professional poker player
