Massin is a surname. Notable people with the surname include:
Brigitte Massin (1927–2002), French musicologist and journalist Caroline Massin (1802–77), French seamstress and bookseller Dona Massin (1917–2001), Canadian choreographer Jean Massin (1917–1986), French historian and musicologist Kain Massin, Australian writer Robert Massin, French graphic designer