Tommasi is an Italian surname. Notable people with the surname include:
Adolfo Tommasi (1851–1933), Italian painter Alejandro Tommasi (born 1957), Mexican television, stage and film actor Angiolo Tommasi (1858–1923), Italian painter Bruno Tommasi (1930–2015), Italian Roman Catholic bishop Corrado Tommasi-Crudeli (1834–1900), Italian physician Damiano Tommasi (born 1974), former Italian football player, current president of the Italian Footballers' Association Giovanni Battista Tommasi (1731–1805), Italian nobleman and 73rd Prince and Grand Master of the Order of Malta Giovanni Tommasi Ferroni (born 1967), Italian artist Joseph Tommasi (1951–1975), American neo-Nazi Joseph Tommasi (communist) (1886–1926), early leader of the French Communist Party Ludovico Tommasi (1866–1941), Italian painter Ludovik Mifsud Tommasi (1796–1879), Maltese priest and writer Luiz Roberto Tommasi, Brazilian zoologist Rino Tommasi (1934–2025), Italian journalist, TV host, sport commentator, and boxing organizer Rodolfo Tommasi (1907–1993), Italian football player Rodolfo Tommasi (journalist) (1946–2015), Italian journalist, writer, musical and literary critic Sara Tommasi, Italian former actress and television personality