"Chief of Hearts" is the eighteenth episode of the twenty-first season of the American animated television series The Simpsons. It originally aired on the Fox network in the United States on April 18, 2010. In this episode, Homer and Chief Wiggum become friends after Homer shares a sandwich with Wiggum during his community service sentence. Meanwhile, Bart becomes addicted to a Japanese kids' game called Battle Ball, but Marge and Principal Skinner believe that Bart is dealing drugs. It is also the first episode in which Lisa does not deliver any dialogue.

The twenty-first season of the American animated television series The Simpsons aired on Fox from September 27, 2009, to May 23, 2010. It was the first of two seasons that the show was renewed for by Fox, and also the first season of the show to air entirely in high definition.