Kenneth McMillan (July 2, 1932 – January 8, 1989) was an American character actor. Portly and ruddy-faced, with an often aggressive and cantankerous demeanor, McMillan was usually cast as gruff, hostile and unfriendly characters.

Character actor Kenneth McMillan was born in Brooklyn, New York, on July 2, 1932. Prior to becoming an actor, McMillan was a manager at Gimbels Department Store. At age 30, McMillan decided to pursue an acting career. He attended the High School of the Performing Arts and took acting lessons from Uta Hagen and Irene Dailey. He made his film debut at age 41 with a small role in Sidney Lumet's superbly gritty police drama Serpico (1973). Portly and ruddy-faced, with an often aggressive and cantankerous demeanor, McMillan was usually cast as gruff, hostile, and unfriendly characters. McMillan's most notable parts include the borough commander in Taking of Pelham One Two Three, The (1974), a cowardly small town sheriff in Tobe Hooper's excellent '79 TV mini-series Salem's Lot (1979) (TV), 'William Hurt' 's bitter paraplegic father in "Eyewitness," a racist fire chief in Ragtime (1981), a wily old safe cracker in Pope of Greenwich Village, The (1984), the vile and grotesquely obese Baron Vladimir Harkonnen in Dune (1984), Aidan Quinn (I)'s pathetic drunken pop in Reckless (1984), and a sleazy high roller gambler in "The Ledge" episode of the hugely enjoyable horror anthology Cat's Eye (1985). Moreover, McMillan was equally adept at comedy, giving especially funny and engaging performances as a baseball club manager in Blue Skies Again (1983), Meg Ryan (I)'s corrupt police chief dad in Armed and Dangerous (1986), and a dotty senile veterinarian in Three Fugitives (1989). McMillan had a steady recurring role as Valerie Harper's irate boss on the TV sitcom "Rhoda" (1974). Among the TV shows McMillan did guest spots on are "Dark Shadows" (1966), "Ryan's Hope" (1975), "Kojak" (1973), "Starsky and Hutch" (1975), "Rockford Files, The" (1974), "Moonlighting," "Magnum, P.I." (1980), and "Murder, She Wrote" (1984). Outside of his substantial film and TV credits, McMillan also frequently performed on stage at the New York Shakespeare Festival. He acted in the original Broadway productions of "Streamers" and "American Buffalo." He won an Obie for his performance in the Off-Broadway play "Weekends and Other People." He's the father of actress Alison McMillan. Kenneth McMillan died of liver disease at age 56 on January 8, 1989.