Growing up, Aina developed a keen interest in football like most young kids, but his talent was quickly recognised, leading him to join the renowned Chelsea academy. He progressed with consistency, showcasing his potential, his dedication, and hard work during this period laid the groundwork for his future success. He polished his skills and gained experience through his career, which eventually increased his demand in senior professional football.
Ola Aina family comprises Olufemi Aina, his father, who worked multiple jobs at that time and even sold the family car to fund his training, which played a crucial role in Ola’s journey. Even after losing their home, his mother held the family together. His mother's name is Esther (née Ewusi) Aina. He has three brothers, Michael Aina, Jordan Aina, and Benjamin Aina.
Ola Aina girlfriend is Nigerian‑British model and influencer, Belky Wara. The couple have reportedly been dating each other for several years.