William Maher, Jr., is an American comedian, actor, writer, and producer. He hosted the late-night television talk show Politically Incorrect on Comedy Central and ABC, and is currently the host of Real Time with Bill Maher on HBO. On June 1, 2006, he also began hosting an Internet-exclusive talk show on Amazon.com entitled Amazon Fishbowl.

Maher is known for his political satire and sociopolitical commentary. His commentaries target a wide swath of topics, from the right-wing to the left-wing, bureaucracies of many kinds, religion, political correctness, Hollywood, the mass media, and persons in positions of high political and social power, among many others. He supports the legalization of cannabis and gay marriage and serves on the board of PETA. Maher is number 38 on Comedy Central's 100 greatest stand-ups of all time.