**Nancy Olson** (b. 1928) is an American actress renowned for her film career. She rose to prominence with her debut role as the idealistic writer Betty Schaefer in Billy Wilder's *Sunset Boulevard* (1950), a performance that earned her an Oscar nomination for Best Supporting Actress.

In the film, she formed an iconic on-screen pairing with William Holden, with whom she co-starred again in *Union Station* (1950). In subsequent years, Olson became a familiar face in Disney films, playing the love interest of Fred MacMurray's character in hits such as *The Absent-Minded Professor* (1961) and its sequel, *Son of Flubber* (1963).

She frequently embodied intelligent, honest, and idealistic characters, the quintessential "girl next door," contributing to define an image of grace and integrity on screen.