Julie McNiven (born October 11) is an American actress and singer. McNiven was born in Amherst, Massachusetts, and got her start in local community theatre productions. She is best known for her recurring roles in Mad Men and Supernatural. McNiven had a recurring role in the 2010-2011 second season of Stargate: Universe.

McNiven studied swinging trapeze as a teenager at French Woods Festival of the Performing Arts. She also attended the summer program at Circle in the Square. She is a graduate of Salem State University (Salem, Massachusetts).

In 2010, McNiven married Michael Blackman Beck, with whom she has one son, Tasman Scott Beck.