| Mgrtitle: | Head coach |
| Manager: | Sankarlal Chakraborty (until 6 January 2018) Khalid Jamil (from 7 January 2018) |
| Chrtitle: | President |
| League Result: | 5th |
| League2 Result: | Champions |
| Cup1 Result: | Walkover |
| League Topscorer: | Dipanda Dicka (5 goals) |
| Season Topscorer: | Dipanda Dicka (15 goals) |
| Highest Attendance: | 62628 |
| Lowest Attendance: | 3388 |
| Average Attendance: | 27270 |
| Pattern B1: | _mbhome_1415 |
| Pattern Sh1: | _mbh18 |
| Pattern So1: | _mbhome_1516 |
| Leftarm1: | 91191B |
| Rightarm1: | 91191B |
| Socks1: | 91191B |
| Pattern La2: | _claretborder |
| Pattern B2: | _mba18 |
| Pattern Ra2: | _claretborder |
| Pattern Sh2: | _redsides |
| Pattern So2: | _mbaway_1213 |
| Socks2: | FFFFFF |
| Prevseason: | 2017–18 |
| Nextseason: | 2019–20 |
The 2018–19 Mohun Bagan FC season was the club's 12th season in I-League and 129th season since its establishment in 1889. They finished 5th in the I-League and were crowned Champions in the Calcutta Football League.
| Sponsors Type | Sponsor's Name | |
|---|---|---|
| Sponsor | — | |
| Co-Sponsor | M.P Birla Cement, Ripley | |
| Kit Sponsor | Shiv Naresh |
| Squad No. | Name | Nationality | Position |
|---|---|---|---|
| Goalkeepers | |||
| 1 | Shankar Roy |  | GK |
| 22 | Shilton Paul | | GK |
| 31 | Ricardo Cardozo | | GK |
| — | Mainak Akuli | | GK |
| Defenders | |||
| 3 | Kingsley Obumneme (C) |  | DF |
| 4 | Dalraj Singh | | DF |
| 5 | Gurjinder Kumar | | DF |
| 14 | Arijit Bagui | | DF |
| 18 | Abhishek Ambekar | | DF |
| 19 | Lalchhawnkima | | DF |
| 28 | Bikramjeet Singh | | DF |
| 37 | Amey Ranawade | | DF |
| Midfielders | |||
| 7 | Yuta Kinowaki |  | MF |
| 8 | Sourav Das | | MF |
| 11 | William Lalnunfela | | MF |
| 15 | Darren Caldeira | | MF |
| 21 | Omar Elhussieny |  | MF |
| 23 | Mehtab Hossain | | MF |
| 25 | Tirthankar Sarkar | | MF |
| 26 | Shilton D'Silva | | MF |
| 27 | Pintu Mahata | | MF |
| 33 | Britto PM | | MF |
| 34 | Abhinas Ruidas | | MF |
| 47 | Sheikh Faiaz (on loan from ATK) | | MF |
| 50 | Sony Norde (VC) | MF | |
| — | Dipankar Das | | MF |
| — | Lalramzauva Khiangte | | MF |
| Forwards | |||
| 9 | Dipanda Dicka |  | FW |
| 10 | Henry Kisekka |  | FW |
| 35 | Azharuddin Mallick | | FW |