**Jeff Donnell** (South Bend, Indiana, July 10, 1921 – Los Angeles, April 11, 1988) was an American actress known for her prolific film and television career. Active since the 1940s, she established herself as a reliable presence, often in supporting roles.

Specializing in playing the loyal friend, the affable neighbor, or the comic sidekick, Donnell was gifted with an innate charm and versatility. Among her most notable roles were Eileen Sherwood in *My Sister Eileen* (1942), Deborah Randolph in *The Fuller Brush Man* (1948) alongside Red Skelton, and Sylvia Nicolai in the noir film *In a Lonely Place* (1950), where she gave a more dramatic performance. She also appeared in popular comedies such as *Pillow Talk* (1959). Although rarely a leading lady, her presence was often a highlight, making her a familiar face to several generations of viewers. In later years, she worked primarily in television.