Jason Nathaniel Behr was born on December 30, 1973, in Minneapolis, Minnesota, to Patricia Ann (Steiner) and David Paul Behr. His ancestry is a unique blend of Swiss-German, German, Austrian, Irish, English, and Danish.
Jason's passion for acting began at the tender age of five, when he started appearing in various theatrical productions, commercials, voice overs, and modeling jobs. He continued to hone his craft throughout his school years, performing in numerous productions.
After graduating from Richfield Senior High School at the age of nineteen, Jason made the bold move to Los Angeles. Shortly after his arrival, he began landing guest roles on popular television shows such as Step by Step, JAG, Buffy the Vampire Slayer, 7th Heaven, and Dawson's Creek.
In 1998, Jason made his film debut in the critically acclaimed movie Pleasantville, starring alongside Reese Witherspoon, Tobey Maguire, and William H. Macy. This role was followed by another notable performance in the indie film Rites of Passage, opposite James Remar and Dean Stockwell, where he received praise for his portrayal of a young homosexual male.
Jason's breakthrough role came when he was cast as "Max Evans" in the television series Roswell, which ran from 1999 to 2002. In 2001, he appeared alongside Kevin Spacey, Cate Blanchett, and Judi Dench in The Shipping News, earning him a Movieline Award for Standout performance.
Jason continued to appear in indie films, including Happily Even After, Shooting Livien, Man of God, Senseless, and The Tattooist. In 2004, he starred opposite Sarah Michelle Gellar in the supernatural thriller The Grudge.
Most recently, Jason finished two unaired pilots for the Fox and NBC networks, respectively. He also completed another indie film, "The Last International Playboy", which premiered at the Slamdance and Gen Art film festivals and was released in select theaters on July 12, 2009.
In his personal life, Jason married actress KaDee Strickland in 2006, and the couple has a son named Atticus.