Rainn Dietrich Wilson (born January 20, 1966) is an American actor. He is known for his roles as the egomaniacal Dwight Schrute on the American version of the television comedy The Office, the leading role in the 2008 comedy The Rocker, and assistant mortician Arthur Martin in HBO's Six Feet Under.

Wilson was born in Seattle, Washington, the son of Shay Cooper, a yoga teacher and actress, and Robert G. Wilson, a novel writer and business consultant. He attended Central Middle School and Shorecrest High School in Shoreline, Washington, where he played the clarinet and bassoon in the band. He transferred to and graduated from New Trier High School after his family moved to Wilmette, Illinois to serve at the Bahá'í National Center. Wilson has a theatre background from Tufts University and the University of Washington, and has taught acting classes. He holds an MFA from New York University's Tisch School of the Arts and was a member of The Acting Company. While acting in theatrical productions in New York, he drove a moving van to make ends meet.

In addition to his starring role on The Office, Wilson has appeared as the eccentric Arthur Martin, the intern at Fisher & Diaz Funeral Home on HBO's Six Feet Under. He has appeared in Law and Order: Special Victims Unit, CSI, NUMB3RS, and Entourage, in the latter portraying a sleazy entertainment journalist based on Harry Knowles of Ain't It Cool News. Wilson guest-starred as a murderous baseball fan in an episode of Monk entitled "Mr. Monk Goes to the Ballgame". He appeared in the "Coyote Piper" episode of Charmed as an alchemist named Kierkan. On February 24, 2007, Wilson hosted Saturday Night Live, becoming the second cast member from The Office to host (after Steve Carell). During the 2007 FIFA Women's World Cup, Wilson appeared in ads for the 2007 United States women's national soccer team as public relations manager "Jim Mike". Wilson has made a guest appearance in two episodes of the Cartoon Network's Adult Swim-bloc series Tim and Eric Awesome Show, Great Job. Wilson has appeared on Reno 911!