Nkemdilim Mary Onyali-Omagbemi, born Onyali, is popularly known as Mary Onyali. She was born on 3 February 1968 in Gongola, in what is now Adamawa State, Nigeria. By ethnicity, she is Igbo, although her family’s roots trace back to Mbaukwu in Awka South Local Government Area of Anambra State. She identifies as a Christian and is Catholic.
Mary Onyali became a professional sprinter, competing mainly in the 100 metres and 200 metres. She represented Nigeria at five consecutive Olympic Games between 1988 and 2004, an exceptional feat in track and field.
In 1992, she won an Olympic bronze medal in the 4 by 100 metres relay. Two years later, in 1994, she claimed gold in the 100 metres at the Commonwealth Games. She added another Olympic bronze medal in 1996 in the 200 metres.
As of 2026, she is 58 years old and is one of Africa’s greatest athletes.
Parents and Siblings
Mary Onyali’s father died when she was really little, around three years old, so her mother had to raise her and her siblings on her own.
Mary is the oldest of four children, with one younger sister and two younger brothers.
Her mum cared a lot about education and made sure Mary balanced school with athletics. At first, she tried to steer Mary away from sports to keep her focused on studies, but later she fully supported her career.
Growing up with her dad gone, Mary had a lot of responsibility, helping her mother take care of her siblings while chasing her own dreams.
Mary’s mother got to see her succeed, and Mary built her a house in Lagos to show her appreciation. Her sister also received an athletic scholarship in the US, like Mary did.
Mary Onyali’s Education
Mary Onyali began her primary education at St John’s Primary School in Olodi‑Apapa and St Mary Anglican Primary School in Ojo, Lagos. She then went to Amuwo Grammar School, Ojo, for her secondary education, where she focused on athletics, competing in long jump, high jump, and sprints, and became the team captain for inter‑house sports.
After secondary school, she earned a sports scholarship to Texas Southern University in Houston, Texas. She studied Telecommunications and Theatre Arts while competing with the TSU Tigers track and field team, winning NCAA titles and setting conference records. Her scholarship and success were supported by mentors, including her then father‑in‑law, Chief Jimmy Omagbemi.
Career and Achievements
Mary Onyali started her athletics journey in Nigeria and earned a sports scholarship to the US, running for Texas Southern University. There, she won an NCAA title in the 200 m and set several Southwestern Athletic Conference records in sprints.
She ran at five straight Games for Nigeria from 1988 to 2004. In Seoul 1988, she competed in the sprints and relay. Barcelona 1992 got her a bronze in the 4×100 m relay. Atlanta 1996 was her big individual moment, taking bronze in the 200 m, which was rare for an African woman in Olympic sprinting. She also ran in Sydney 2000 and Athens 2004, though she didn’t medal there. Five Olympics in a row is a record for Nigerian athletes.
Outside the Olympics, she dominated the Commonwealth Games, winning gold in the 100 m and relay and silver in the 200 m in 1994. She dominated the All‑Africa Games and African Championships, racking up golds in the 100 m, 200 m, and relays over the years. She was also a regular finalist in World Championships throughout the 1990s.
Her personal bests came during this peak period: 10.97 s in the 100 m (1993), 22.07 s in the 200 m (1996), and 54.21 s in the 400 m (2000), with her 200 m mark standing as a Nigerian and African record for over twenty years.
After retiring, she continued in sports administration, serving as Special Adviser (Technical) to Nigeria’s National Sports Commission and later as Special Adviser on Sports to the Minister. She also promoted grassroots sports, becoming an ambassador for the National Principal’s Cup in 2020. In 2023, she was honoured at the African Games in Accra, Ghana.
Mary Onyali-Omagbemi’s career and consistency over five Olympics make her one of Nigeria’s greatest sporting legends.
Major Medals
| Event | Medal | Competition |
|---|---|---|
| 4 × 100m relay | Bronze | 1992 Olympics |
| 200m | Bronze | 1996 Olympics |
| 100m | Gold | 1994 Commonwealth Games |
| 4 × 100m relay | Gold | 1994 Commonwealth Games |
| 200m | Silver | 1994 Commonwealth Games |
| 4 × 100m relay | Gold | 1994 World Cup |
| 100m | Bronze | 1994 World Cup |
| 100m | Silver | 1989 World Cup |
| 200m | Silver | 1989 World Cup |
| Multiple | Gold | African Championships & All-Africa Games (7+ titles) |
| 200m | Silver | World Junior Championships |
| 4 × 100m relay | Bronze | World Junior Championships |
Business and Mentorship
After retiring, Mary Onyali founded Yali Yali Enterprises, a sportswear company creating gear for African athletes. The brand launched in Lagos, and she reinvested her earnings from athletics to provide proper clothing suited to local conditions. The business works with various states and government sports bodies.
Mary didn’t stop there; she also focused on youth sports development. She helped start BOOST (Basic Olive Opportunity Sport Training), which discovers and nurtures talent in primary and secondary schools. She also mentors young athletes at sports camps, guiding them on training, discipline, and balancing school with sports. She has been involved with the Mary Onyali 3D Centre, supporting athletes aiming for professional careers, and has held advisory roles in national sports leadership to shape grassroots programs.
In August 2025, she was a lead mentor at the WYCDF × NSSF Sports & Leadership Camp in Ogun State. The week-long camp brought together hundreds of students from South West Nigeria. Mary shared her experience as an elite athlete through motivational talks, coaching sessions, and guidance on personal growth. The camp also included health and anti-doping education.
Husband and Children
Mary Onyali was married to Victor Omagbemi, another Nigerian sprinter. They met doing the same athletics, trained with the same coach, and went to Texas Southern University in the United States. That’s where they got close and later got married. They had two children together, a daughter and a son. The daughter followed in her mum’s footsteps, competing in sprinting events like the 100m and 200m at junior levels, while the son was active in football and other school sports.
Victor Omagbemi did very well as a sprinter, too. In 1991, he ran in the 4×100m relay at the World Championships in Tokyo, where the Nigerian team finished fourth. In 1992, he won both the 100m and 200m at the African Championships. The fastest he ever ran the 100m was 10.27 seconds, and for the 200m, his best time was 20.54 seconds.
After their marriage ended, Victor married Quasheba Lee Omagbemi and had several more children: Tia, Maudejanei’ (or Maudejanei’ Alero), Ivan, Jaide, and Lea.
Net Worth
Mary Onyali has a net worth of $5 million USD. Most of her wealth comes from her career as a professional sprinter. She earned lots of money from international competitions, prizes, sponsorships, and national honours.
After retiring, she worked in government advisory roles and sports administration, which added to her income. She also started her own sportswear brand, and she’s paid for public speaking, endorsements, and event appearances as a famous former athlete.