Alatri is a surname. Notable people with the surname include:
Crescenzo Alatri (1825–1897), Italian writer Giacomo Alatri (1833–1889), Italian banker and philanthropist Goffredo da Alatri (died 1287), Italian nobleman and Roman Catholic cardinal Paolo Alatri (1918– 1995), Italian historian and Marxist politician Samuel Alatri (1805–1889), Italian politician, communal worker, and orator