Nelson Zacharie M. Onana Alima (born 1 March 2000)[1] is a field hockey player who plays for Léopold and the Belgium national team.

[7][3] In 2019 Onana made his debut for the Belgium U–21 team during an eight–nations tournament in Madrid, winning a bronze medal.

[8] Before making his junior debut, Onana earned his first senior cap in a 2019 test match against Russia.

[7] Onana didn't represent the national team again until 2022, when he appeared in season three of the FIH Pro League.

[7][2] He won his first medals with the national team in 2023, taking home bronze at the EuroHockey Championship in Mönchengladbach, as well as season four of the FIH Pro League.