Cantinflas
— Cantinflas
Silvia Pinal
— Rosita
Carlos Martínez Baena
— Don Sebastian, el profe
Óscar Pulido
— Elpidio
Fernando Casanova
— Raúl
José Baviera
— Dr. Perfecto Lozano
Josefina del Mar
— La vecina bailarina
Conchita Gentil Arcos
— Doña Cuca, vecina
Pepe Martínez
— Profesor examinador
Pedro Elviro
— Don Fortino
Ricardo Adalid
— Amigo de Raúl en fiesta (uncredited)
Felipe de Flores
— Amigo de Raúl en fiesta (uncredited)
Stephen Berne
— Masajista (uncredited)
Victorio Blanco
— Hombre en velorio (uncredited)
Rodolfo Calvo
— Hombre en velorio (uncredited)
Carmen Cabrera
— Miembra del patronato (uncredited)
María Valdealde
— Miembra del patronato (uncredited)
Paco Martínez
— Miembro del patronato (uncredited)
Félix Samper
— Miembro del patronato (uncredited)
Jaime Calpe
— Estudiante inteligente (uncredited)
José Luis Moreno
— Estudiante (uncredited)
Ismael Pérez 'Poncianito'
— Estudiante (uncredited)
Jorge Pérez
— Estudiante (uncredited)
Lupe Carriles
— Vecina chismosa (uncredited)
María Gentil Arcos
— Vecina chismosa (uncredited)
Lupe del Castillo
— Vecina (uncredited)
Regino Herrera
— Vecino (uncredited)
Enrique Carrillo
— El tarzán, vecino pachuco (uncredited)
Jorge Chesterking
— John, amigo de Perfecto (uncredited)
Edmundo Espino
— Esposo de Guadalupe (uncredited)