Peter Clarke (born April 7, 1952), known professionally as Clarke Peters, is an American actor, writer, and director, who has spent much of his adult life in the United Kingdom. He is best known for his roles as Lester Freamon in the television series The Wire (2002–2008) and Albert Lambreaux in the television series Treme (2010–2013). He also wrote the book for the musical revue Five Guys Named Moe (1990).

Peters is also known for his roles in the films Silver Dream Racer (1980), Endgame (2009), John Wick (2014), Three Billboards Outside Ebbing, Missouri (2017), Harriet (2019), and Da 5 Bloods (2020), the lattermost of which earned him a nomination for the BAFTA Award for Best Actor in a Supporting Role.