Having previously played for youth teams of Watford, Saka joined Arsenal's Hale End academy at the age of seven. Once he turned 17 years old, Saka was given a professional contract by Arsenal and promoted to the under-23 side.
Saka has then spent his entire senior career with Arsenal, where he has won an FA Cup and an FA Community Shield, progressively becoming one of Arsenal's most prolific and influential players. Following the 2020−21 and 2021−22 seasons, he was named as Arsenal's player of the season.