Warren Frost was an American actor. His work had mainly been in theatre, but he had worked in films and television sporadically between 1958 and his death. He is known for roles in Twin Peaks, Matlock, The Larry Sanders Show, and Seinfeld. He was a theatrical teacher in Minnesota, his students included Lance Davis and Robert Engels. Frost was the father of Twin Peaks co-creator Mark Frost and writer Scott Frost.