Massi is an Italian surname. Notable people with the surname include:
Charles Massi (1952–2010), Central African politician Elisabeth Massi Fritz (born 1967), Swedish lawyer Emidio Massi (1922–2016), Italian politician Enrico Massi (1897-1923), Italian aviator Eugenio Massi (1875–1944), Italian Catholic missionary Jeri Massi (born 1960), American author Maria Massi Dakake, Islamic intellectual historian Nick Massi (1927–2000), American singer Riccardo Massi, Italian operatic tenor Robert Massi (born 1987), Swedish footballer Rodolfo Massi (born 1965), Italian cyclist Souad Massi (born 1972), Algerian singer Sousan Massi (born 1989), Swedish tennis player Stelvio Massi (1929–2004), Italian film director Valentina Massi (born 1983), Italian model