Mel Ferrer

as El Greco (Domenico Teotocopulo)

Rosanna Schiaffino

as Jeronima de las Cuevas

Adolfo Celi

as Don Miguel de las Cuevas

Fernando Rey

as Re Filippo II

Mario Feliciani

as Nino de Guevara

Franco Giacobini

as Francisco

Renzo Giovampietro

as Frate Felix

Ángel Aranda

as Don Luis