At international level, he features for Republic of the Congo. His main role on the pitch is Midfield. His stronger foot is Right.

His latest transfer saw him join AS Otôho from CARA Brazzaville via on 2024-07-01.

Over 3 appearances in the FIFA World Cup qualification (CAF) 2026, Gedeon Nongo contributed 0 goals and 0 assists, completed 0 key passes from 4 total passes, and posted a passing accuracy of 0.3.