Keir Gilchrist is a Canadian actor. His acting career started in the early 2000s. During his beginnings, he appeared on the TV shows Queer as Folk and Queer as Folk, as well as acted on the TV movie Samantha: An American Girl Holiday. During this period he also appeared in the films The Right Way, Horsie’s Retreat, and Saint Ralph. His first notable role was on the TV series The Winner. He then became known for his starring role of Marshall Gregson on United States of Tara. Afterwards, he had roles in the films Dark Summer, It Follows, The Stanford Prison Experiment, and The Good Neighbor. This year, he stars as Sam on the Netflix series Atypical.