Kleintank was born on May 18, 1990 in Cincinnati, Ohio. He and his family moved to Guadalajara, Mexico, when he was two. He spent his formative years in Stevensville, Maryland, where he resided for twelve years.
Kleintank's mother introduced him to acting when he was five. "She threw me into my first play, Carnival. Made a part for me", he recounts. "That's when I knew I wanted to act." He started doing plays and community theater, and took part in a number of stage productions while in high school.
Ultimately, Kleintank went to New York City to pursue his acting career, and made his television debut as Greg in a 2009 episode of Law & Order: Special Victims Unit. In 2010, he played a recurring role in Gossip Girl as Elliot Leichter, a bisexual love interest for Eric van der Woodsen. Kleintank landed his first daytime role that same year, debuting as Noah Newman in The Young and the Restless on September 21, 2010; however, he left the role after less than six months.
In 2011, Kleintank joined the recurring cast of the Fox series Bones, playing Finn Abernathy. He has also appeared multiple times in the CBS series The Good Wife. From 2013 to 2014, Kleintank portrayed the recurring character of Travis in the ABC Family teen drama series Pretty Little Liars. In 2015, Kleintank was cast as Joe Blake in the Amazon series The Man in the High Castle.
Kleintank enjoys whitewater rafting, singing, dancing, and writing music. He is also interested in geocaching.
|2012||Dark House||Nick Di Santo|
|2014||1000 to 1: The Cory Weissman Story||Brendan "Pops" Trelease||Direct-to-video|
|2014||Phantom Halo||Beckett Emerson|
|2009||Law & Order: Special Victims Unit||Greg||Episode: "Snatched"|
|2009||Good Wife, TheThe Good Wife||Brian Keller||Uncredited; episode: "Home"|
|2009||Mercy||Josh||Episode: "I'm Not That Kind of Girl"|
|2010–11||Gossip Girl||Elliot Leichter||10 episodes (3 uncredited)|
|2010–11||Young and the Restless, TheThe Young and the Restless||Noah Newman||Role held: September 21, 2010 – April 8, 2011|
|2011||No Ordinary Family||Chris Minor||7 episodes|
|2011||Greek||Rylan||Episode: "Agents for Change"|
|2011||Law & Order: LA||Jesse Beckman||Episode: "Runyon Canyon"|
|2011–14||Bones||Finn Abernathy||9 episodes|
|2011||CSI: Miami||Tom Granger||Episode: "Long Gone"|
|2012||The Good Wife||Connor||Episode: "Here Comes the Judge"|
|2013, 2015||Person of Interest||Caleb Phipps||3 episodes|
|2013||CSI: Crime Scene Investigation||Jake / Usher||2 episodes|
|2013–14||Pretty Little Liars||Travis Hobbs||9 episodes|
|2015–present||The Man in the High Castle||Joe Blake||Main role|