Mark Richard Hamill (born September 25, 1951) is an American actor, voice artist, producer, director and writer, best known for his portrayal of Luke Skywalker in the original Star Wars trilogy and as the iconic voice of The Joker in the DC Animated Universe.

Hamill was born and raised in Oakland, California, the son of Virginia Suzanne (née Johnson) and William Thomas Hamill, who was a captain in the U.S. Navy. He was one of seven children: two brothers, Will and Patrick, and four sisters, Terry, Jan, Jeanie, and Kim. As a child, his father's career meant numerous relocations, and he attended different schools throughout his childhood. For 10th grade, he attended Annandale High School located in Annandale, Virginia, but eventually ended up graduating from Nile C. Kinnick High School in Japan. He majored in drama at Los Angeles City College.

Hamill's early career included voicing the character Corey Anders on the Saturday morning cartoon Jeannie by Hanna-Barbera Productions. He also portrayed the oldest son David on the pilot episode of Eight Is Enough, though the role was later performed by Grant Goodeve. He acted in TV series such as The Texas Wheelers, General Hospital, and One Day At A Time. One of his earliest movies was the made-for-TV film The City.