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

Nino Crisman

as Don Diego di Castiglia

Gabriella Giorgelli

as Maria

Giulio Donnini

as Pignatelli

Rafael Rivelles

John Karlsen

John Francis Lane

Rossana Martini

as Zaida

Maria Marchi

Franco Fantasia

Andrea Bosic

as L'accusatore

Bruno Scipioni

Rosi Di Pietro

as Isabel

Mary Di Pietro

Víctor Israel

Giulio Farnese

as Maestro d'armi

Santiago Ontañón

as Leoni

Franco Mariotti

as Nobile spagnolo