Alessia Russo was born on February 8, 1999, in Maidstone, England.
Russo is of Italian descent. Her Sicilian grandfather moved to England in the 1950s. Her father Mario played non-league football for Metropolitan Police and her brother Giorgio has also played non-league football for multiple teams, most recently for Ramsgate.
Her brother Luca went to the University of Missouri on a track and field scholarship.
At a young age, Russo signed a two-year contract with the option for a third year with Manchester United, the club she grew up with. She scored her first goal for the club in the following game, starting in a 3-0 victory over Brighton & Hove Albion.
In the 2021-2022 season, Russo led the team in goals with 11 goals in 30 appearances in all competitions and was named the inaugural winner of the team’s players’ player of the year.