Shawn Ryan is an American screenwriter and television producer. He has created and/or produced a number of television series including The Shield (2002–2008), The Unit (2006–2009), Lie to Me (2009–11), Timeless (2016–2018), S.W.A.T. (2017–present) and The Night Agent (2023–present).

The Shield is an American crime drama television series starring Michael Chiklis that premiered on March 12, 2002, on FX in the United States, and concluded on November 25, 2008, after seven seasons. Known for its portrayal of corrupt police officers, it was originally advertised as Rampart in reference to the true-life Rampart Division police scandal, on which the show's Strike Team was loosely based. The series was created by Shawn Ryan and The Barn Productions for Fox Television Studios and Sony Pictures Television.