Masi is a surname. Notable people with the surname include:
Alberto Masi (born 1992), Italian footballer Alex Masi, Italian musician Andrea Masi, Italian rugby player Andy Masi, American entrepreneur, real estate developer, and business executive Angela Masi (born 1987), Italian politician Aristides Masi (born 1977), former Paraguayan footballer Binta Masi Garba (born 1967), Nigerian politician, businesswoman and administrator Denis Masi (born 1942), British artist Esala Masi (born 1974), retired Fijian footballer Federico Masi (born 1990), Italian footballer Gianluca Masi, Italian astrophysicist Giuseppe Di Masi (born 1981), Italian footballer Julie Masi, Canadian musician Kitso Masi (born 1984), Motswana actor Lance de Masi (born 1949), president of the American University in Dubai Manoa Masi (born 1974), former Fijian professional footballer Mattia Masi (born 1984), Sammarinese footballer Michael Masi (born 1978), former Formula One race director. Phil Masi, American baseball player Reni Masi (1933–2020), Canadian politician Sébastien Masi, French Michelin-starred head chef in Ireland Seraphim Masi (1797–1884), American silversmith
See also De Masi, people with this surname