William Daniel Corbett (born March 30, 1960) is an American writer and performer for television, film and theatre.

In addition to his work on Mystery Science Theater 3000, in 1991, he starred in the computer game Sherlock Holmes: Consulting Detective, and in 2001, Corbett co-wrote the Sci Fi Channel miniseries The Adventures of Edward the Less, with several other former MST3K writers.

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.

In 2014, Corbett and RiffTrax colleague Len Peralta created the comic book Super Powered Revenge Christmas.

[4] He is also a member of the Democratic Socialists of America and helped canvass for Eunisses Hernandez and Hugo Soto-Martinez during the 2022 Los Angeles elections.