Bill Corbett is an American writer and performer for television, film and theatre. He was a writer and performer on the cult television show Mystery Science Theater 3000, for which he voiced the robot Crow T. Robot during the show's later seasons on the Sci Fi Channel and played the character Observer and other minor roles. In 2001, Corbett co-wrote the Sci Fi Channel miniseries The Adventures of Edward the Less with several other former MST3K writers. Corbett also co-wrote the 2008 film Meet Dave starring Eddie Murphy.
From 2002 to 2006, Corbett was a member of The Film Crew, a movie-riffing comedic team comprising former MST3K costars Michael J. Nelson and Kevin Murphy. Since 2006 Corbett has also recorded audio commentary tracks with Nelson and Murphy for Nelson's RiffTrax service and contributes regular humor posts to the RiffTrax blog.