John Ross "Jock" Ewing, Sr. (1909–82) is a character in the popular American television series Dallas, played by Jim Davis (1978–81); in the made-for-TV movie prequel to the series, Dallas: The Early Years (1986), he was played by Dale Midkiff. Jock Ewing founded Ewing Oil in 1930 and was the patriarch of the Ewing family.