Cometti is an Italian surname. Notable people with the surname include:
Aldana Cometti (born 1996), Argentine professional footballer Dennis Cometti (1949–2026), Australian sports commentator Giampiero Cotti Cometti (1935–2009), Italian geographer Sara Cristina Cometti, Italian fencer in the 2003 European Fencing Championships Valerio Cometti (born 1975), Italian industrial designer Zaccaria Cometti (1937–2020), Italian footballer