Gregory Stephen Poirier (born May 19, 1961) is an American film and television writer, director, and producer.

He wrote the screenplay for the John Singleton-directed film Rosewood (1997), for which he won the Writers Guild of America's Paul Selvin Award.

Poirier's other writing credits include The Lion King II: Simba's Pride (1998), Gossip (2000), A Sound of Thunder (2005), National Treasure: Book of Secrets (2007) [citation needed], The Spy Next Door (2010) starring Jackie Chan, and Knox Goes Away (2023), directed by and starring Michael Keaton.

Poirier is creator, executive producer, and writer of the ABC mystery series Missing, starring Ashley Judd, which aired for one season in 2012.

You can help Wikipedia by expanding it.This article about an American screenwriter born in the 1960s is a stub.