Who Killed Who?
- Taon: 1943
- Bansa: United States of America
- Genre: Animation, Comedy, Mystery
- Studio: MGM Cartoon Studio, Metro-Goldwyn-Mayer
- Keyword: whodunit, murder investigation, live action and animation, short film
- Direktor: Tex Avery
- Cast: Robert Emmett O'Connor, Tex Avery, Sara Berner, Billy Bletcher, Richard Haydn, Kent Rogers