Jules Denis Onana (born 12 June 1964 in Yaoundé) is a retired Cameroonian football player. He is the brother of Elie Onana. He played for the club Canon Yaounde, and also took part in the 1990 FIFA World Cup, playing 3 of the 5 matches of the Cameroon national football team. He decided to retired in 2005 after played in several clubs in Camerron,France and Indonesia with Pelita Jaya. After retirement, he served as the player agent in Asia, including Singaporean football player Agu Casmir and Pierre Njanka. He had 56 caps for Cameroon national football team.