Maynard C. "Duke" Pettijohn (born June 7, 1977) is an American Arena football defensive lineman who is currently a free agent. He was signed by the Cincinnati Bengals as an undrafted free agent in 2001. He played college football at Syracuse and was a two-time member of the All-Big East team.Pettijohn has been a member of the Jacksonville Jaguars and Orlando Predators.