| Club: | Club Atlético Tigre |
| Season: | 2017–18 |
| Manager: | Ricardo Caruso Lombardi (until 8 December 2017) Cristian Ledesma (from 13 December 2017) |
| Chairman: | Rodrigo Molinos |
| Stadium: | Estadio José Dellagiovanna |
| League: | Primera División |
| League Result: | 27th |
| Cup1: | Copa Argentina |
| Cup1 Result: | Round of 64 |
| League Topscorer: | Two players (2) |
| Season Topscorer: | Two players (2) |
| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
The 2017–18 season was Club Atlético Tigre's 12th consecutive season in the top-flight of Argentine football. The season covers the period from 1 July 2017 to 30 June 2018.
.[1]
| Date | Pos. | Name | From | Fee | |
|---|---|---|---|---|---|
| 1 July 2017 | DF |  Alexis Niz | Sarmiento | Undisclosed[2] [3] | |
| 1 July 2017 | GK | Julio Chiarini | Sarmiento | Undisclosed | |
| 1 July 2017 | MF | Rodrigo Depetris | Sarmiento | Undisclosed | |
| 4 July 2017 | DF | Mathías Abero | Atlético de Rafaela | Undisclosed | |
| 5 July 2017 | MF | Daniel Imperiale | Gimnasia y Esgrima | Undisclosed | |
| 5 July 2017 | FW | Ivo Hongn | Pacífico | Undisclosed | |
| 5 July 2017 | DF | Manuel González | Pacífico | Undisclosed | |
| 11 July 2017 | DF | Gastón Bojanich | Temperley | Undisclosed | |
| 13 July 2017 | MF | Hamilton Pereira | Sarmiento | Undisclosed | |
| 18 July 2017 | MF | Matías Pérez García |  Orlando City | Undisclosed | |
| 19 July 2017 | MF | Jacobo Mansilla | Newell's Old Boys | Undisclosed | |
| 22 July 2017 | FW | Lucas Passerini | Estudiantes | Undisclosed | |
| 26 July 2017 | MF | Ezequiel Rodríguez | Atlanta | Undisclosed | |
| 30 July 2017 | DF | Maximiliano Caire | Vélez Sarsfield | Undisclosed |
| Date | Pos. | Name | To | Fee | |
|---|---|---|---|---|---|
| 1 July 2017 | MF | Diego Castaño | Released[4] | ||
| 1 July 2017 | DF | Ignacio Bonadío | Released | ||
| 1 July 2017 | DF | Iván Dubois | Released | ||
| 3 July 2017 | DF | Emiliano Papa | Arsenal de Sarandí | Undisclosed | |
| 10 July 2017 | MF | Alexis Castro | San Lorenzo | Undisclosed | |
| 13 July 2017 | FW |  Sebastián Rincón | Vitória Guimarães | Undisclosed | |
| 16 July 2017 | DF | Bruno Urribarri | Patronato | Undisclosed | |
| 25 July 2017 | MF | Emiliano Ellacopulos | Aldosivi | Undisclosed | |
| 30 July 2017 | MF | Diego Morales | Colón | Undisclosed | |
| Date from | Date to | Pos. | Name | From | |
|---|---|---|---|---|---|
| 14 July 2017 | 30 June 2018 | DF | Carlos Rodríguez | Plaza Colonia | |
| 30 July 2017 | 30 June 2018 | FW | Denis Stracqualursi | Santa Fe |
See main article: article and 2017–18 Argentine Primera División.
See main article: article and 2017–18 Copa Argentina.