Anson Williams (born September 25, 1949 in Los Angeles, California) is an actor and director.

Born as Anson William Heimlick — his father Haskell legally changed the original spelling of the family name from "Heimlich" — he grew up in Toledo, Ohio, and attended the local high school, where he was captain of the track team and acted in multiple school productions. He is best known for his role as gullible but well intentioned singer Warren "Potsie" Weber on the long-running hit television series Happy Days. His character was one of the few to remain through the entire run of the series, although his appearances became less frequent in later seasons.

In 1986, Williams directed the CBS Schoolbreak Special The Drug Knot. This dealt with the problem of teenage drug abuse and was highly acclaimed. Many critics praised it as the best anti-drug show ever made. He has gone on to direct many episodes of popular television shows, including episodes of Beverly Hills 90210, Melrose Place, seaQuest DSV, Star Trek: Deep Space Nine, Star Trek: Voyager, Xena: Warrior Princess, Hercules: The Legendary Journeys, Sabrina the Teenage Witch and Charmed.