The Westwood, Calif., resident died April 28 at Los Angeles' Barlow Respiratory Hospital, The Hollywood Reporter said this week.
No other details regarding the circumstances of her death were immediately reported.
"She was a stunning woman," close friend Meredith Silverbach told the Times after hearing Medina died. "In her youth, they called her 'the most beautiful face in England.'"
The Liverpool native appeared in more than 50 films, including "Botany Bay," "Plunder of the Sun," "Abbott and Costello in the Foreign Legion," "Sangaree," "Phantom of the Rue Morgue" and "Mr. Arkadin." Her TV credits include "Rawhide," "The Alfred Hitchcock Hour" and "The Man From Uncle."
She married Hollywood actor Joseph Cotten in 1960. He died in 1994.