The 2021 season was Biratnagar City's 1st Nepal Super League season in 2021.
On 18 March, Biratnagar City announced the signing of Nepal national football team defender Ranjit Dhimal as its marquee player.
On the auction of Nepal Super League, Biratnagar City acquired various players such as midfielder Sunil Bal, Bijal Dhimal, Hem Tamang, etc.
On 14 April, Biratnagar City signed contract with three foreign players, Spanish forward Pedro Manzi, Nigerian forward Adelaja Somide and Cameroonian defender Ulrich Siewe.
<small>Includes all competitive matches. The list is sorted alphabetically by surname when total goals are equal.</small>