| Clubname: | Chennaiyin F.C. |
| Fullname: | Chennaiyin Football Clu |
| Club: | Chennaiyin |
| Season: | 2017-2018 |
| Chrtitle: | President |
| Ceotitle: | CEO |
| Mgrtitle: | Head Coach |
| Manager: | John Gregory |
| Stadium: | Jawaharlal Nehru Stadium, Chennai |
| League: | ISL |
| League Result: | 2nd |
| Cup1: | ISL finals |
| Cup1 Result: | Champions |
| League Topscorer: |  Jeje Lalpekhlua (9 goals) |
| Season Topscorer: | Jeje Lalpekhlua (9 goals) |
| Highest Attendance: | 19,013 |
| Lowest Attendance: | 12,499 |
| Average Attendance: | 15,538 |
| Largest Win: | 3–0 (vs NorthEast United on 23 Nov 2017) 3–0 (vs Goa on 13 Mar 2018) |
| Largest Loss: | 1–3 (vs NorthEast United on 19 January 2018) 1–3 (vs Bengaluru on 6 February 2018) |
| Pattern La1: | _whiteborder |
| Pattern B1: | _vneckwhite |
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| Pattern Sh1: | _whitebottom |
| Pattern So1: | _1415h |
| Leftarm1: | 000080 |
| Body1: | 000080 |
| Rightarm1: | 000080 |
| Shorts1: | 000080 |
| Socks1: | 000080 |
| Pattern La2: | _navyborder |
| Pattern B2: | _vnecknavy |
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| Pattern Sh2: | _transparentbottom |
| Pattern So2: | _top_on_white |
| Socks2: | 000080 |
| Prevseason: | 2016 |
| Nextseason: | 2018–19 |
| Updated: | 13 March 2018 |
The 2017–18 Chennaiyin FC season was the club's fourth season since its establishment in 2014 and their fourth season in the Indian Super League.
In:
Out:
| Position | Name | |
|---|---|---|
| Head coach | John Gregory | |
| Assistant coach | Mark Lillis | |
| Assistant coach | Syed Sabir Pasha | |
| Sports scientist | Niall Clark | |
| Goalkeeping coach | Tony Warner | |
| Physiotherapist | Robert Gilbert |
See main article: article.
As one of the top six teams in Indian Super League, Chennaiyin FC qualified for the main round in 2018 Indian Super Cup. Chennaiyin FC will meet the fifth placed I-League side Aizawl F.C. in Round of 16 match.[2]
|-|colspan="14"|Players who left Chennaiyin due to injury during the season:|}
| width=60 | Place | width=60 | Position | width=60 | Nation | width=60 | Number | width=150 | Name | width=100 | ISL | width=100 | Super Cup | width=80 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | FW | | 12 | Jeje Lalpekhlua | 9 | 0 | 9 | ||||||||
| 2 | DF |  | 27 | Mailson Alves | 4 | 1 | 5 | ||||||||
| 3 | DF |  | 14 | 3 | 0 | 3 | |||||||||
| MF | | 19 | Raphael Augusto | 3 | 0 | 3 | |||||||||
| 5 | FW | | 20 | Mohammed Rafi | 2 | 0 | 2 | ||||||||
| MF | 10 | Rene Mihelič | 2 | 0 | 2 | ||||||||||
| MF | | 15 | Anirudh Thapa | 2 | 0 | 2 | |||||||||
| MF | | 17 | Dhanpal Ganesh | 2 | 0 | 2 | |||||||||
| 9 | DF | 2 | Henrique Sereno | 1 | 0 | 1 | |||||||||
| MF | 7 | Gregory Nelson | 1 | 0 | 1 | ||||||||||
| MF | | 30 | Francis Fernandes | 1 | 0 | 1 | |||||||||
| DF | | 25 | Dhanachandra Singh | 0 | 1 | 1 | |||||||||
| Own goal | 1 | 0 | 1 | ||||||||||||
| TOTALS | 31 | 2 | 33 | ||||||||||||
| width=150 | Player | width=80 | ISL | width=80 | Super Cup | width=80 | Total | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | GK | | Karanjit Singh | 7 | 0 | 7 | ||||
| 2 | 13 | GK | | Pawan Kumar | 1 | 0 | 1 | ||||
| 3 | 36 | GK | | Shahinlal Meloly | 0 | 0 | 0 | ||||
| TOTALS | 8 | 0 | 8 | ||||||||
| Number | Nation | Position | Name | ISL | Super Cup | Total | |||||||
| 1 | | GK | Karanjit Singh | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | |
| 2 | DF | Henrique Sereno | 8 | 1 | 0 | 0 | 0 | 0 | 8 | 1 | 0 | ||
| 6 | | MF | Bikramjit Singh | 2 | 0 | 0 | 1 | 0 | 0 | 3 | 0 | 0 | |
| 7 |  | MF | Gregory Nelson | 5 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | |
| 8 | | MF | Jaime Gavilán | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | |
| 10 | MF | Rene Mihelič | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | ||
| 12 | | FW | Jeje Lalpekhlua | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | |
| 14 | | DF | Iñigo Calderón | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | |
| 15 | | MF | Anirudh Thapa | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | |
| 17 | | MF | Dhanpal Ganesh | 9 | 0 | 0 | 1 | 0 | 0 | 10 | 0 | 0 | |
| 18 | | DF | Jerry Lalrinzuala | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | |
| 19 | | MF | Raphael Augusto | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | |
| 27 | | DF | Maílson Alves | 5 | 0 | 0 | 1 | 0 | 0 | 6 | 0 | 0 | |
| 28 | | MF | Germanpreet Singh | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | |
| TOTALS | 47 | 1 | 0 | 3 | 0 | 0 | 50 | 1 | 0 | ||||