Ronald Shusett (born June 1935) is an American screenwriter and film producer, best known for his works in the science fiction genre.

He wrote the original story for Alien (1979) with Dan O'Bannon and later Alien vs. Predator (2004). In 1974, he was the first to option the Philip K. Dick short story, "We Can Remember It for You Wholesale", that became the basis of the film Total Recall.