Eldon Quick (born April 4, 1937 in San Joaquin County, California) is an American character actor. He is an alumnus of the American Shakespeare Festival and has numerous stage, screen, and television roles to his credit.
Quick's best-remembered television character is the bureaucratic Captain Sloan from two early episodes of M*A*S*H ("Payday" and "The Incubator"), which he reprised as Captain Pratt in "The Late Captain Pierce". Quick also played scheming magazine editor Rob Roy Fingerhead in an episode of The Monkees, and the villain Chronos in the final episode of Buck Rogers in the 25th Century.
He appeared in a Bewitched episode, "Samantha's Secret Saucer", as Captain Tugwell.
Quick's movie roles include Charlie Hawthorne in In the Heat of the Night, William Harper Littlejohn in Doc Savage: The Man of Bronze, and Reverend Lowell in The Big Bet.