Guillermo José "Willy" Montesinos Serrano (born 10 January 1948) is a Spanish actor who has appeared in more than 50 films in his career.

[1] Montesinos graduated in Dramatic Art in 1969 from Madrid.

He went on to appear in successful films like La vaquilla (1984), La vida alegre (1987), Mujeres al borde de un ataque de nervios (1988), the latter of which was directed by Pedro Almodóvar.

His television roles include Pero ¿esto qué es?

(1990-1991), Los ladrones van a la oficina (1993-1995) Contigo pan y cebolla (1997).