Warren Frost was an American actor. His work was mainly in theater, but he worked in films and television sporadically from 1958. He is known for television roles on Matlock and Seinfeld, and particularly as Doctor Hayward on Twin Peaks, a series co-created by his son Mark Frost. He has also appeared in TV movies, such as Psycho IV: The Beginning (1990) and The Stand (1994).

Matlock is an American mystery legal drama television series created by Dean Hargrove and starring Andy Griffith in the title role of criminal defense attorney Ben Matlock. The show, produced by Intermedia Entertainment Company, The Fred Silverman Company, Dean Hargrove Productions and Viacom Productions, originally aired from March 3, 1986, to May 8, 1992, on NBC, and from November 5, 1992, to May 7, 1995, on ABC.