Eric Christian Olsen (born May 31, 1977) is an American actor. He is known for his portrayals of Detective Marty Deeks on the CBS television series NCIS: Los Angeles, and of Austin in the film Not Another Teen Movie. Olsen was born in Eugene, Oregon, the son of Jeanne (née Donstad), a non-denominational chaplain, and Paul V. Olsen, a professor of English, and head track and cross country coach of Augustana College in Rock Island, Illinois. He has an older brother, David, who acts as his stunt double; David is married to actress Daniela Ruah. Olsen is of Norwegian descent. Olsen spent most of his childhood in Bettendorf, Iowa and attended Bettendorf Middle and High School, where he pursued interests such as sports, Japanese, and Chinese. In addition to many local theatre performances, Olsen trained in improv with ComedySportz Quad Cities and later joined the cast. Olsen became engaged to actress Sarah Wright in October 2011. They were married near Jackson Hole, Wyoming, on June 23, 2012. Their first child, a son, Wyatt Oliver Olsen was born on August 16, 2013 and their second child, a daughter, Esmé Olivia Olsen was born on August 9, 2016. Olsen and Wright were featured in a 2015 episode of the HGTV series House Hunters buying a vacation home near Jackson Hole. Olsen works with the charity Hats Off for Cancer as an Honorary Board Member and Spokesperson, featured on their Public Service Announcement video.

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