Oumar Ballo (born 13 July 2002) is a Malian college basketball player for the Indiana Hoosiers of the Big Ten Conference.

Ballo grew up in Koulikoro, Mali played football as a goalkeeper but shifted his focus to basketball due to his exceptional height.

[3] When he was 11 years old, Ballo began training with coach Mohamed Diarra in his hometown, eventually earning an invitation from Canterbury Academy, a British private school in Las Palmas, Spain.

[1] In May 2017, Ballo was named most valuable player (MVP) of the Spain Under-16 Championship after helping Canterbury finish in third place, behind bigger clubs like Barcelona and Real Madrid, and leading the tournament in rebounds.

[8] In February 2019, Ballo played at the Basketball Without Borders camp at 2019 NBA All-Star Weekend in Charlotte, North Carolina, where he was one of the youngest participants.

[16] Playing for Mali at the 2018 FIBA Under-17 World Cup in Argentina, Ballo averaged 20.6 points and a tournament-high 16.9 rebounds per game and was named to the All-Star Five.