Dusan J. "Duke" Maronic (July 13, 1921 – July 1, 1996) was an American football offensive lineman who played eight seasons in the NFL, mainly for the Philadelphia Eagles. He didn't play college football. Dusan J. "Duke" Maronic in 1965, was also an Assistant Coach in the Atlantic Coast Football League with the Harrisburg Capitols, and then took over the Head Coaching job in 1966 through 1967.