Frank Onyeka

Onyeka was born on 1 January 1998 in Benin City, Edo State, Nigeria, the second oldest of five siblings. He has stated that his mother was not supportive of him playing football early on: "She wanted us to study, because the opportunity of becoming a football player at that point was slim. She would rather I went to school than play football." Aged 15, while playing for local club Faith Motors Academy, he was noticed by Churchill Oliseh, owner and manager of Ebedei—a club with ties to Midtjylland in the Danish Superliga—and the man credited for discovering Nigerian international Obafemi Martins. Before joining Ebedei, Onyeka supported his family by doing roofing work. His move to Ebedei, located in Sagamu, Ogun State, more than 250 kilometers from Benin City, was the first time he was away from home, and required significant adjustments. Despite the distance and his prior responsibilities, Onyeka remained committed to pursuing his dreams, something he later recognised as instrumental in developing a resilient mindset.

Midtjylland

After moving from Nigerian club Ebedei to cooperation club Midtjylland in Denmark in January 2016, Onyeka established himself as part of the club, and on 20 September 2017 he made his first-team debut in the Danish Cup in a 7–0 win over Greve, where he also scored. Onyeka went on to make his Danish Superliga debut for the club a few months later in the club's 2017–18 campaign in a match against Horsens on 9 February 2018. There, he also scored, and was a key part in the 2–0 win. Onyeka distinguished himself again in the next fixture, on 18 February, against the leading Superliga team from Copenhagen, where he scored his second league goal for the club at the right winger position as Midtjylland beat the capital side 3–1. He was subsequently praised by head coach Jess Thorup for his positional versatility and maturity. Onyeka made his UEFA Champions League debut in the following season, in Midtjylland's qualifier against Astana on 24 July 2018.

Brentford

Onyeka signed for newly promoted Premier League side Brentford on 20 July 2021 for an undisclosed fee. He made his competitive debut for the club on 13 August, the first matchday of the season, starting in a 2–0 victory against Arsenal; the Bees' first ever Premier League win. During his first seasons at Brentford, he grappled with securing a regular spot in the first team, often sidelined by injuries, and primarily featuring as a substitute. On 7 August 2023, he signed a new four-year contract,…

Onyeka received his first call-up for the Nigeria national team on 22 September 2020 for the friendly matches against Algeria and Tunisia in Austria on 5 and 9 October 2020, respectively. He made his debut for the national team in a friendly 1–0 loss to Algeria on 9 October 2020. He scored his first goal for his country on 16 October 2023, in a 3–2 win over Mozambique. Onyeka was a part of the Nigerian team that emerged runners-up at the 2023 African Cup of Nations. During the tournament, he started all seven of Nigeria's games. On 11 December 2025, Onyeka was called up to the Nigeria squad for the 2025 Africa Cup of Nations.

Onyeka was born and bred in Benin City. He is nicknamed "The Tank".