Deanna Oliver is an American actress and writer. Oliver performed the voice of Toaster in the film The Brave Little Toaster (1987) and its sequels. In addition, she was a writer of the animated series Tiny Toon Adventures (1990) and Animaniacs (1993). Sherri Stoner worked with her for Universal's fantasy comedy Casper (1995) and Disney's My Favorite Martian (1999).
In addition to writing for animation, she currently teaches and directs main-stage shows at The Groundlings Theater in Hollywood.