Quartetto Ritmo was a jazz vocal male quartet working in Italy during the 1940s.
The group originated from the previous Quartetto Egie, after Iacopo Jacomelli left the formation. Virgilio Savona replaced him and joined Tata Giacobetti, Enrico Gentile and Enrico De Angelis to form the new Quartetto Ritmo.
In 1941 Enrico Gentile was replaced by Felice Chiusano and the group changed name to Quartetto Cetra.