Totò as Il Professore

Pablito Calvo as Marcellino

Memmo Carotenuto as Zeffirino

Jone Salinas as Ardea

Fanfulla as Alvaro Merini, il vero zio di Marcellino

Wandisa Guida as la maestra

Nanda Primavera as la portinaia Rosina

Amelia Perrella as sora Amalia

Marianna Leibl as la contessa

Renato Terra as

Sandro Bianchi as l'avvocato Bianchi

Salvatore Campochiaro as l'avvocato

Damiano Polito as Bambino