| Club: | Arsenal de Sarandí |
| Season: | 2017–18 |
| Manager: | Humberto Grondona (until 10 December 2017) Sergio Rondina (from 15 December 2017) |
| Chairman: | Julio Ricardo Grondona |
| Stadium: | Estadio Julio Humberto Grondona |
| League: | Primera División |
| League Result: | 28th |
| Cup1: | Copa Argentina |
| Cup1 Result: | Round of 64 |
| Cup2: | Copa Sudamericana |
| Cup2 Result: | Second stage |
| League Topscorer: | Six players (1) |
| Season Topscorer: | Rodrigo Contreras (2) |
| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
The 2017–18 season is Arsenal de Sarandí's 17th 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 | |
|---|---|---|---|---|---|
| 3 July 2017 | DF |  Emiliano Papa | Tigre | Undisclosed[2] [3] | |
| 4 July 2017 | DF | Facundo Cardozo | Vélez Sarsfield | Undisclosed | |
| 18 July 2017 | MF | Iván Bella | Vélez Sarsfield | Undisclosed | |
| 20 July 2017 | MF | David Drocco | Audax Italiano | Undisclosed | |
| 31 July 2017 | MF | Joaquín Ibáñez | Lanús | Undisclosed |
| Date | Pos. | Name | To | Fee | |
|---|---|---|---|---|---|
| 1 July 2017 | MF | Federico Flores | Released | ||
| 1 July 2017 | MF | Gabriel Sanabria | Released | ||
| 1 July 2017 | DF | Jonathan Bottinelli | Released | ||
| 1 July 2017 | DF | Luciano Vella | Released | ||
| 18 July 2017 | DF | Juan Sánchez Sotelo | Temperley | Undisclosed[4] | |
| 25 July 2017 | MF | Gonzalo Bazán | Sarmiento | Undisclosed[5] | |
| 1 August 2017 | DF | Germán Niz | San Telmo | Undisclosed | |
| 3 August 2017 | MF | Gonzalo Papa | Villa Dálmine | Undisclosed | |
| 10 August 2017 | DF | Tomás Berra | Santamarina | Undisclosed | |
| 22 August 2017 | MF | Juan Brunetta | Belgrano | Undisclosed | |
| Date from | Date to | Pos. | Name | From | |
|---|---|---|---|---|---|
| 1 July 2017 | 30 June 2018 | DF | Facundo Monteseirín | Lanús[6] | |
| 1 July 2017 | 30 June 2018 | MF | Germán Ferreyra | Unión La Calera[7] | |
| 1 July 2017 | 30 June 2018 | FW | Rodrigo Contreras | San Lorenzo | |
| 19 July 2017 | 30 June 2018 | FW | Gastón del Castillo | Independiente[8] | |
| 2 August 2017 | 30 June 2018 | GK | Maximiliano Velazco | River Plate | |
| 3 August 2017 | 30 June 2018 | MF | Emiliano Purita | San Lorenzo |
See main article: article and 2017–18 Argentine Primera División.
See main article: article and 2017–18 Copa Argentina.
See main article: article and 2017 Copa Sudamericana.