Marchiori is an Italian surname. Notable people with the surname include:
Alberto Marchiori (born 1993), Italian footballer Domenico Marchiori (1828–1905), Italian painter Fernando Marchiori (born 1979), Brazilian footballer and manager Leo Marchiori (1898–1949), Canadian cyclist Massimo Marchiori (born 1970), Italian mathematician and computer scientist Tomás Marchiori (born 1995), Argentine footballer Val Marchiori (born 1974), Brazilian businesswoman