Massart is a Belgian surname. Notable people with the surname include:
Dave Massart (1919–1993), English professional footballer Jean Massart (1865–1925), Belgian botanist Lambert Massart (1811–1892), Belgian violinist. Lucien Massart (1908–1988), Belgian scientist Marguerite Massart (1900–1979), first woman to graduate as an engineer in Belgium.
See also MassArt, the Massachusetts College of Art and Design Mass art