[, Brian (2007).jpg|right|thumb|Brian Nelson during the [[2007 Writers Guild of America strike]]]
Brian Nelson is an American screenwriter whose numerous writing credits include the television series Lois & Clark: The New Adventures of Superman, Gene Roddenberry's Earth: Final Conflict, JAG and Disney television series So Weird and In a Heartbeat as well as writer and co-producer of the feature film Hard Candy. He also wrote the play "Overlooked" and co-wrote the script for the vampire film 30 Days of Night, which was released in late 2007 and was directed by Hard Candy director David Slade.

Brian Nelson holds degrees from Yale University and from UCLA. He was Drama teacher at Langley High School in McLean, Virginia in the early 1980's, where he taught Gilmore Girls actress Lauren Graham, Little Miss Sunshine screenwriter Michael Arndt, and UCLA Screenwriting Teacher Brian Price.