Source Code is a 2011 U.S. science fiction action thriller film directed by Duncan Jones and written by Ben Ripley. It stars Jake Gyllenhaal as Captain Colter Stevens of the U.S. Army, who is sent into an eight-minute virtual re-creation of a real-life train explosion, and tasked with determining the identity of the terrorist who bombed it. Michelle Monaghan, Vera Farmiga, and Jeffrey Wright play supporting roles.

It had its world premiere on March 11, 2011, at South by Southwest and was released by Summit Entertainment on April 1, 2011, in North America and Europe. It received positive reviews from critics and was a box office success, grossing over $147.3 million on a $31.9 million budget.