"Bart the Murderer" is the fourth episode of the third season of the American animated television series The Simpsons. It originally aired on the Fox network in the United States on October 10, 1991. In the episode, Bart stumbles upon a Mafia club after having bad luck at school. The owner of the bar, mobster Fat Tony, hires Bart as a bartender. When Principal Skinner goes missing after punishing him at school, Bart is put on trial for his murder.

The third season of the American animated television series The Simpsons originally aired on the Fox network between September 19, 1991, and August 27, 1992. The showrunners for the third production season were Al Jean and Mike Reiss who executive produced 22 episodes for the season, while two other episodes were produced by James L. Brooks, Matt Groening, and Sam Simon, with it being produced by Gracie Films and 20th Century Fox Television. An additional episode, "Brother, Can You Spare Two Dimes?", aired on August 27, 1992, after the official end of the third season and is included on the Season 3 DVD set. Season three won six Primetime Emmy Awards for "Outstanding Voice-Over Performance" and also received a nomination for "Outstanding Animated Program" for the episode "Radio Bart". The complete season was released on DVD in Region 1 on August 26, 2003, Region 2 on October 6, 2003, and in Region 4 on October 22, 2003.