| No. | Pos. | Nation | Player |
| 1 | GK | India | Dheeraj Singh |
| 2 | DF | India | Sumit Rathi |
| 5 | DF | India | Sandesh Jhingan |
| 6 | FW | India | Manvir Singh |
| 7 | MF | India | Komal Thatal |
| 8 | MF | Ireland | Carl McHugh |
| 9 | FW | Australia | David Williams |
| 10 | MF | Spain | Edu García |
| 11 | MF | Australia | Brad Inman |
| 12 | GK | India | Avilash Paul |
| 14 | MF | India | Glan Martins |
| 15 | DF | India | Subhasish Bose |
| 16 | MF | India | Jayesh Rane |
| 17 | MF | India | Pronay Halder |
| 18 | MF | India | SK Sahil |
| 19 | MF | Spain | Javi Hernández |
| 20 | DF | India | Pritam Kotal |
| 21 | FW | Fiji | Roy Krishna |
| 22 | FW | India | Jobby Justin |
| 23 | FW | India | Michael Soosairaj |
| 24 | DF | India | Salam Ranjan Singh |
| 25 | MF | India | Michael Regin |
| 27 | DF | India | Boris Singh |
| 28 | DF | India | Ankit Mukherjee |
| 29 | GK | India | Arindam Bhattacharya |
| 31 | GK | India | Arsh Anwer Shaikh |
| 33 | DF | India | Prabir Das |
| 44 | DF | Spain | Tiri |
| — | DF | England | John Johnson |
| — | MF | India | Kiyan Nassiri |
Head Coach: Antonio Lopez Habas
After failing to make the playoffs in successive seasons, ATK will look get back on track this season and compete in the top end of the table. Antonio Lopez Habas, previously on the books of Granada, Valencia, Celta Vigo and Pune City FC in India among other clubs, has been appointed as the Head Coach for the forthcoming season.
The Kolkata based club have been one of the most active sides in the transfer market and have bolstered their ranks with the additions of Carl McHugh, David Williams, Michael Soosairaj and Javi Hernandez.
Habas will look to imprint his philosophy and rejuvenate the two-time winners after two underwhelming seasons in the ISL. On paper, ATK look as strong as they've been since their title winning heroics in the third edition of the ISL and seem to have all bases covered.
