Ben Ripley is an American screenwriter best known for writing the science-fiction thriller Source Code[2] directed by Duncan Jones.

Ripley sold his spec script for Source Code in 2007 to Universal Studios.

It was ranked as one of the top unproduced screenplays in the annual Hollywood black list.

[5] In an interview with the Writers Guild of America, Ripley talked about his script and the uncertainty over its production: Yeah, it was agony.

At that point, I'd spent about four years doing studio rewrites on horror movies that were never getting made.