Regina "Regie" Baff is an American actress. She was nominated for a Tony Award in 1974 for Veronica's Room.
Regina Baff appeared in The West Side Waltz with Katharine Hepburn. She also appeared on film, starring in Below the Belt about lady wrestlers (not the porno movie by the same title) and Road Movie, a film by Joseph Strick about a truck hooker (not the Korean film by the same title). She also appeared in The Paper Chase, The Great Gatsby, Who Is Harry Kellerman, and Why Is He Saying Those Terrible Things About Me?, and Escape from Alcatraz. On television, she appeared in numerous situation comedies, including an episode of Taxi in which her character gave birth in the backseat of a taxi.
Regina Baff has a Ph.D. in psychology, and is sister of Ella Baff, director of Jacob's Pillow.