2021 United City F.C. season

The 2021 season is United City Football Club's 10th in existence and 4th season in the top flight of Philippine football. This also marks as the second season the club plays as United City, after MMC Sportz took over the management of the club, which was formerly known as Ceres–Negros.

In addition to the Philippines Football League, United City as Ceres–Negros has also participated in the second-tier continental competition, and the AFC Champions League. United City intended to continue on participating in the AFC Champions League.

Transfers
Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.