Marc Gonsalves is an American Northrop Grumman employee who was captured by the Revolutionary Armed Forces of Colombia (FARC) and was held hostage from February 13, 2003 to July 2, 2008. He was rescued in Operation Jaque, along with the two other American contractors, Ingrid Betancourt, and eleven members of the Colombian security forces. On March 12, 2009, Gonsalves, Keith Stansell and Thomas Howes were each awarded the Secretary of Defense Medal for the Defense of Freedom.

Marc Gonsalves is the son of George Gonsalves and Jo Rosano. He was raised in Bristol, Connecticut and has a brother.

Gonsalves served as an imagery analyst in the United States Air Force for eight years prior to becoming a contractor employed by California Microwave Systems, a subsidiary of Northrop Grumman.