Peter Julian Robin Morgan CBE (born 10 April 1963) is a British screenwriter and playwright. He has written for theatre, films and television, often about historical events or figures such as Queen Elizabeth II, which he has covered extensively in all major media. He has received several accolades, including five BAFTA Awards, two Primetime Emmy Awards, four Golden Globe Awards, and nominations for two Academy Awards, a Tony Award and a Laurence Olivier Award. In February 2017, Morgan was awarded a British Film Institute Fellowship.

He is the playwright behind the plays Frost/Nixon(2005), The Audience (2013), and Patriots (2022), the former of which was nominated for the Tony Award for Best Play. As a screenwriter, Morgan received Academy Award nominations for The Queen (2006) and Frost/Nixon (2008). He also wrote the screenplays for The Last King of Scotland (2006), The Other Boleyn Girl (2008), The Damned United (2009), and Rush (2013). Morgan is also known for his work in television, writing the ITV series The Jury (2002), the Channel 4 film The Deal (2003), and the HBO films Longford (2006) and The Special Relationship (2010). He served as creator and show-runner of the Netflix series The Crown (2016–2023).