Pilar Bougas (May 26, 1929 – February 23, 2025), known professionally as Pilar Del Rey, was an American actress whose career spanned from the late 1940s until 1990. She was best known for portraying Mrs. Obregón in the 1956 epic film Giant.

Del Rey was born in Fort Worth, Texas, on May 26, 1929. She died in Los Angeles, California, on February 23, 2025, at the age of 95.

Pilar Del Rey appeared in several Westerns early in her career. Her first credited role was Marguarita in The Kid from Texas (1950). This was followed by Siege at Red River in 1954. In 1956 she appeared as Mrs. Obregón in Giant, alongside James Dean. She also appeared in the Western television series The Adventures of Kit Carson and the radio drama Maria Elena. A character actress, her credits include various Mexican and Spanish female characters.