John Mullen (born 30 May 1968; age 56) is an actor who appeared as a Vulcan scientist in the Star Trek: Enterprise first season episode "Fusion". He filmed his scene along with Jolene Blalock and Enrique Murciano on Thursday 13 December 2001 on Paramount Stage 8 and is listed as "Vulcan" on the call sheet for this day.
Between 1986 and 1991, Mullen attended the University of Southern California where he graduated with a Bachelor of Fine Arts in Theatre. He then worked as production assistant on several independent and television projects and also as writer and editor for Inner-view, Inc.
In 1998, Mullen was featured in the action film Raising the Heights and in 2003 in the comedy Much Ado. Further acting work includes episodes of JAG (2004, with Scott Lawrence, Zoe McLellan, Steven Culp, and Brian Avery), Close to Home (2007, with Cress Williams, Patrick Fabian, Maury Sterling, Rocco Sisto, and Bruce Davison), and Criminal Minds: Suspect Behavior (2011, with Scott Lawrence, Bill Cobbs, and Brian Fitzpatrick).
In addition, Mullen worked as stand-in on television series such as Mad Men (with Mark Moses and Joseph Culp), NCIS: Los Angeles, Law & Order: LA (2010), for Garret Dillahunt on Terminator: The Sarah Connor Chronicles (2008, starring Thomas Dekker), and Close to Home. His work on stage include the plays Nicholas Nickleby, Hurly Burly, Suburbia, The Children's Hour, and for Bruce Gray in The Long Weekend.
Besides his work in front of the camera, Mullen has been working as freelance assistant stage manager for projects such as Big Brother, The Tyra Banks Show, Superstar USA, and So You Want to Be a Soap Star since 1999.