John James "Jack" Bannon (born June 14, 1940) is an American television actor. He is most famous for his role as Assistant City Editor Art Donovan on Lou Grant, a role he played for the duration of the series, from 1977 until 1982.
Bannon's parents were film and television actors Jim Bannon (Red Ryder) and Bea Benaderet (The George Burns and Gracie Allen Show, Petticoat Junction, The Beverly Hillbillies, and The Flintstones). In 1963 Bannon appeared in season 1 episode 8 "Kate's recipe for hot rhubarb" of "Petticoat Junction" as Bobbie Joe's date, Roger. In 1969, Bannon appeared again on Petticoat Junction (after his mother died in 1968). He was "Buck" in the episode "One of Our Chickens Is Missing".
Bannon is married to actress Ellen Travolta, an elder sister of John Travolta. They live in Coeur d'Alene, Idaho.