Brassard is a surname. It may have derived from brassard, an armband used as an item of military uniform. Notable individuals with the surname include:
Augustin Brassard (1922–1971), Canadian politician Derick Brassard (born 1987), Canadian ice hockey player François Brassard (1908–1976), Canadian musician Gilles Brassard (born 1955), Canadian computer scientist Fernando Brassard (born 1971), Portuguese footballer Jacques Brassard (born 1940), Canadian politician Jean-Luc Brassard (born 1972), Canadian freestyle skier Paul Brassard, American politician Pierre Brassard (born 1966), Canadian actor Roy Brassard (1930–2008), Canadian politician Vincent Brassard (1919–1974), Canadian politician