His relation with the cinema began at an early age when he was employed as a boy in the Estudios Chamartín in Madrid. There he performed many jobs, until he was made chief of production in 1953.
In 1962 he founded his own production company, Pedro Masó Producciones Cinematográficas, with which he produced some of the biggest commercial successes of Spanish film, including Atraco a las tres, Vacaciones para Ivette, Un millón a la basura and La familia bien, gracias.
In 1986 he created the firm Escorpio Films as a branch of Pedro Maso Producciones and subsequently produced his first feature-length movie, entitled El Tesoro with direction by Antonio Mercero and based on the novel of Miguel Delibes.
- Television Stories (1965)