Shane Carruth (born 1972) is an American filmmaker, screenwriter, composer, and actor. He is the writer, director, and co-star of the prize-winning science-fiction film Primer (2004), which was his debut feature. His second film, Upstream Color (2013), was an experimental science-fiction film which he wrote, directed, produced, edited, designed, and starred in. He also composed the scores for both films. In recognition of Carruth's idiosyncratic and, at times, bizarre filmmaking technique, director Steven Soderbergh told Entertainment Weekly, "I view Shane as the illegitimate offspring of David Lynch and James Cameron."

Early life
Carruth was born in Myrtle Beach, South Carolina in 1972. He attended Stephen F. Austin State University as a mathematics major. Before becoming a filmmaker, he worked as a developer of flight-simulation software.