Colton Haynes got his start as a model for Abercrombie & Fitch. He launched his modeling career at the age of 15 and went to three different high schools. Upon moving to Los Angeles, he decided to pursue acting and eventually landed roles on CSI: Miami, The Hills, Privileged, Pushing Daisies and the Hallmark Channel film Forever and Always where he played Scott Holland.
In 2010, Haynes was cast as Brett Crezki, a werewolf on the ABC Television series The Gates. After the cancellation of the series, he moved on to join the cast of Teen Wolf, a TV adaptation of the movie with the same name. He plays Jackson Whittemore, lead star Tyler Posey's friend and lacrosse teammate.