"Homer vs. Lisa and the 8th Commandment" is the thirteenth episode of the second season of the American animated television series The Simpsons. The 26th episode of the series overall, it originally aired on the Fox network in the United States on February 7, 1991. In the episode, Homer gets an illegal cable hookup. Despite the family's enjoyment of the new channels, Lisa suspects they are stealing cable. Her suspicions are confirmed by Reverend Lovejoy and she protests by no longer watching television. Homer invites his friends to watch a cable-TV boxing match, but Lisa's protest persuades him to cut the cable when the fight ends.

The second season of the animated television series The Simpsons originally aired on the Fox network between October 11, 1990, and July 11, 1991, and contained 22 episodes, beginning with "Bart Gets an "F". Another episode, "Blood Feud", aired during the summer after the official season finale. The executive producers for the second production season were Matt Groening, James L. Brooks, and Sam Simon, who had also been executive producers for the previous season. It was produced by Gracie Films and 20th Century Fox Television. The DVD box set was released on August 6, 2002, in Region 1, July 8, 2002 in Region 2 and in September 2002 in Region 4. The episode "Homer vs. Lisa and the 8th Commandment" won the Primetime Emmy Award for Outstanding Animated Program, and was also nominated in the "Outstanding Sound Mixing for a Comedy Series or a Special" category.