Kyle Merritt MacLachlan is an American actor best known for his Emmy nominated and Golden Globe winning role as Dale Cooper in Twin Peaks and its film prequel Twin Peaks: Fire Walk with Me (1992). He is also known for his roles in another two of Twin Peaks co-creator David Lynch's films: Paul Atreides in Dune (1984) and Jeffrey Beaumont in Blue Velvet (1986). MacLachlan's other film roles include Lloyd Gallagher in The Hidden (1987), Ray Manzarek in The Doors (1991), Cliff Vandercave in The Flintstones (1994), Zack Carey in Showgirls (1995) and Riley's father in the Inside Out film series.

Federal Bureau of Investigation Special Agent Dale Bartholomew Cooper, portrayed by Kyle MacLachlan, is a fictional character who is the protagonist of the ABC television series Twin Peaks and its 2017 revival series by Showtime. He also plays a supporting role in the prequel film Twin Peaks: Fire Walk with Me.