Tesi is a surname. Notable people with the surname include:
Henri Tesi (1903–?), French racing cyclist Luciano Tesi (born 1931), Italian astronomer Mauro Antonio Tesi (1730–1766), Italian painter Riccardo Tesi (born 1956), Italian musician Tesi Niu (born 2001), Tongan international rugby league footballer Vittoria Tesi (fl. 18th century), Italian opera singer
See also Təsi, village in Azerbaijan