Gregory Berlanti (born May 24, 1972) is an American screenwriter, producer and director. He is known for his work on the television series Dawson's Creek, Brothers & Sisters, Everwood, Political Animals, Riverdale, Chilling Adventures of Sabrina and You, in addition to his contributions to DC Comics on film and television productions, including The CW's Arrowverse, as well as Titans and Doom Patrol. In 2000, Berlanti founded the production company Berlanti Productions.

In the 2017–2018 television season, Berlanti tied Jerry Bruckheimer's 2005–2006 record in having 10 different live-action scripted television series airing on various networks and digital platforms and took sole possession of the record, with 14 airing in the 2018–19 television season, having signed the most expensive producer deal at that time (June 2018) with Warner Bros. In the 2019–20 television season, with one cancellation and two new series, Berlanti increased the record to 18. Berlanti also directed the 2018 film Love, Simon, a gay romantic comedy-drama which grossed $66 million worldwide.