Mary Onyali is a retired Nigerian sprinter known for her achievements in track and field. Born on January 3, 1970, she specialized in the 100 meters and 200 meters events. Throughout her career, she represented Nigeria in various international competitions, including the Olympic Games and the World Championships. Onyali gained recognition for her speed and competitive spirit, earning several medals for her country. She was part of the Nigerian relay teams that excelled in major tournaments, contributing to Nigeria's reputation in athletics. After retiring from competitive sports, she has been involved in promoting athletics and mentoring young athletes in Nigeria.