Michael Dorn (born December 9, 1952) is an American actor and voice actor who is known for his role as the Klingon Worf in the Star Trek franchise.
From his first appearance in the series premiere episode of Star Trek: The Next Generation, "Encounter at Farpoint", in 1987 to his last in Star Trek: Nemesis in 2002, Dorn has appeared more times as a regular cast member than any other Star Trek actor in the franchise's history, spanning five films and 272 television episodes. He also appeared as Worf's ancestor, Colonel Worf, in the 1991 film Star Trek VI: The Undiscovered Country.
Following the end of his Star Trek career, Dorn had supporting roles in a number of independent feature films, including Shadow Hours (2000), Lessons for an Assassin (2001), and the Santa Clause trilogy, in which he appeared in a cameo role as the Sandman.
Dorn owns and flies a T-33 air force trainer jet and has in the past flown with display squadrons of the armed forces of the United States.