Michael Dorn was born (December 9th, 1952) in Luling, Texas, the son of Allie Lee and Fentress Dorn, Jr. He grew up in Pasadena, California. He studied radio and television production at Pasadena City College. From there, he pursued a career in music as a performer with several different rock music bands, travelling to San Francisco and then back to Los Angeles.

Dorn first appeared in Rocky as Apollo Creed's bodyguard, though he was not credited. He also appeared as a guest on the television show W.E.B. in 1978. The producer was impressed with his work, so he introduced Dorn to an agent who then introduced him to acting teacher Charles E. Conrad to study acting for six months. He then landed a regular role on the television series Chips.

Dorn's most famous role to date is that of the Klingon Starfleet officer Lieutenant (later Lt. Commander) Worf in Star Trek: The Next Generation and Star Trek: Deep Space Nine. 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.

"If what happened to the first cast is called being typecast," Dorn says, "then I want to be typecast. Of course, they didn't get the jobs after 'Trek.' But they are making their sixth movie. Name me someone else on television who has made six movies!"

Dorn directed the Star Trek: Deep Space Nine Episodes In the Cards, Inquisition and When It Rains..., and the Star Trek: Enterprise episode Two Days and Two Nights.

In 2012, Dorn announced a desire to return to his Klingon role in a television series tentatively titled Star Trek: Captain Worf. He said:

“I had come up with the idea because I love Worf and I think he's a character that hasn't been fully developed and hasn't been fully realized. Once I started thinking about it, it became obvious to me that I wanted to at least put it out there, which I have, and the response has been amazing. We've been contacted by different individuals–I can't say who and all that–about wanting to come on board and be part of this.”

In 2014, Dorn participated in the fan-produced Star Trek episode Fairest of Them All, giving his voice to the computer of the Mirror Universe Enterprise.

Dorn has appeared in several TV shows, films, and video games. He has been the spokesman for Neutrogena T-Gel Shampoo and has appeared in a Dodge Dart car commercial.

Dorn has appeared as Worf on Webster and Family Guy, the latter along with fellow Star Trek: The Next Generation stars. He had a recurring role on the television series Castle, playing the therapist of NYPD police detective Kate Beckett.

A member of the Aircraft Owners and Pilots Association, Dorn is an accomplished pilot. He has flown with the Blue Angels as well as the Thunderbirds. Dorn has owned several jet aircraft, including a Lockheed T-33 Shooting Star, which he jokingly refers to as his Starship, a North American F-86 Sabre, and currently owns a North American Sabreliner. Dorn also serves on several aviation organizations, one of which is the Air Force Aviation Heritage Foundation, where he is on the advisory board. He has done interviews for the "Private Jets" episode of Modern Marvels on The History Channel.

Dorn stated in a 2010 interview that he had been diagnosed with an early stage of prostate cancer, which led him to become a vegan.

Film Career:
  • 1976 Rocky
  • 1977 Demon Seed
  • 1985 Jagged Edge
  • 1991 Star Trek VI: The Undiscovered Country
  • 1994 Star Trek Generations
  • 1995 Timemaster
  • 1995 Mission Critical
  • 1996 Star Trek: First Contact
  • 1997 Menno's Mind
  • 1998 Star Trek: Insurrection
  • 2000 Shadow Hours
  • 2000 The Prophet's Game
  • 2001 The Gristle
  • 2001 Mach 2
  • 2001 Ali
  • 2002 Face Value
  • 2002 Star Trek: Nemesis
  • 2002 The Santa Clause 2
  • 2003 Shade
  • 2003 Lessons For an Assassin
  • 2003 The Interplanetary Surplus Male and Amazon Women of Outer Space
  • 2005 Heart of the Beholder
  • 2005 Thru the Moebius Strip
  • 2006 The Santa Clause 3: The Escape Clause
  • 2007 Fist of the Warrior
  • 2007 Night Skies
  • 2007 The Deep Below
  • 2009 Bionicle: The Legend Reborn
  • 2012 Strange Frame
  • 2015 Ted 2
  • 2017 The Man from Earth: Holocene
  • 2019 Wonder Woman: Bloodlines

Television Career:
  • 1979–1982 CHiPs
  • 1981 Knots Landing
  • 1985 227
  • 1985 Hunter
  • 1986–1987 Days of Our Lives
  • 1987–1994 Star Trek: The Next Generation
  • 1988 Reading Rainbow
  • 1989 Webster
  • 1991–1994 Dinosaurs
  • 1994 SWAT Kats: The Radical Squadron
  • 1994–1997 Gargoyles
  • 1995 Amanda and the Alien
  • 1995 World of Wonder
  • 1995–1996 Fantastic Four
  • 1995–1999 Star Trek: Deep Space Nine
  • 1995–2000 The Outer Limits
  • 1996 Adventures from the Book of Virtues
  • 1996 Captain Simian & the Space Monkeys
  • 1996–2000 Superman: The Animated Series
  • 1997–1999 I Am Weasel
  • 2000 Martial Law
  • 2001 7th Heaven
  • 2002 Through the Fire
  • 2003 Justice League
  • 2003 Kim Possible: A Sitch in Time
  • 2003 Spider-Man: The New Animated Series
  • 2003–2005 Duck Dodgers
  • 2004–2005 Megas XLR
  • 2004–2007 Danny Phantom
  • 2005 Justice League Unlimited
  • 2005 Descent
  • 2005, 2009 Family Guy
  • 2006 All You've Got
  • 2006 A.I. Assault
  • 2006 Fallen Angels
  • 2009 Batman: The Brave and the Bold
  • 2009 Heroes
  • 2010 Adventure Time
  • 2010 It's a Trap!
  • 2011–2015 Castle
  • 2011 Winx Club
  • 2012, 2014 Regular Show
  • 2015–2016 Teenage Mutant Ninja Turtles
  • 2016–2017 Arrow
  • 2017 Supergirl
  • 2017 Transformers: Titans Return
  • 2017–2019 The Lion Guard
  • 2018 OK K.O.! Let's Be Heroes