Mackenzie Alexander Astin (born May 12, 1973) is an American actor.

Astin was born on May 12, 1973, in Los Angeles, California, the son of actress Patty Duke and actor John Astin.^[1] His brother is actor Sean Astin.^{[lower-alpha 1]} He attended Ralph Waldo Emerson Middle School and University High School in Los Angeles.^{[citation needed]} He is married to Jennifer Abbott Astin (née Bautz).^{[citation needed]}

Astin made his acting debut at age 9 in the TV movie Lois Gibbs and the Love Canal, and is often remembered for the adolescent television role of Andy Moffett over four seasons from 1985 to 1988 on the sitcom The Facts of Life. He has had recurring roles on Scandal,^[2] The Magicians, and Homeland, and has made guest appearances on LOST, House, Psych, Grey's Anatomy, and NCIS.

Astin has appeared in motion pictures including Iron Will with Kevin Spacey, Wyatt Earp with Kevin Costner, The Evening Star with Shirley MacLaine, and Whit Stillman's The Last Days of Disco.

He starred in the movie Hell and Mr. Fudge in 2012.

In November 2020, Astin was cast in a recurring role on the third season of the Netflix psychological thriller series You.^[3]

CAMIE Awards

• 2005: Won, "Character and Morality in Entertainment" – Love's Enduring Promise (shared w/producers, co-stars)

Young Artist Awards

• 1986: Won, "Best Young Supporting Actor in a Television Series" – The Facts of Life