Penn Fraser Jillette (born March 5, 1955) is an American magician, actor, musician, inventor, television presenter, and author, best known for his work with fellow magician Teller as half of the team Penn & Teller. The duo has been featured in numerous stage and television shows, such as Penn & Teller: Fool Us and Penn & Teller: Bullshit!, and is currently headlining in Las Vegas at The Rio. Jillette serves as the act's orator and raconteur.

Jillette has published eight books, including the New York Times Bestseller, God, No!: Signs You May Already Be an Atheist and Other Magical Tales. He is also known for his advocacy of atheism, scientific skepticism, the First Amendment, as well as previously identifying as a libertarian, a position he disavowed in 2020.