In total 14 clubs are going to take part with the teams divided into two groups of seven teams each.
The status of SC East Bengal and their participation is still unconfirmed with the IFA having a back-up plan of fielding an IFA Academy side in the competition.
2021 Calcutta Football League – Premier Division A
Group 1: Bhawanipore Club, SC East Bengal, Southern Samity, Mohammedan Sporting Club, BSS Sporting Club, Railways FC, United Sports Club
Group 2: Aryan Club, Tollygunge Agragami, ATK Mohun Bagan FC, George Telegraph SC, Peerless SC, Kidderpore Sporting Club, Calcutta Customs Club