| Club: | Peñarol |
| Season: | 2017 |
| Manager: | Leonardo Ramos |
| Chairman: | Juan Pedro Damiani |
| League: | Primera División |
| League Result: | tbd |
| Cup1 Result: | tbd |
| League Topscorer: | Nahitan Nández (4 goals)  Lucas Cavallini (4 goals)Junior Arias (4 goals) |
| Chrtitle: | President |
| Season Topscorer: | Nahitan Nández (4 goals) Lucas Cavallini (4 goals) Mauricio Affonso (4 goals) Junior Arias (4 goals) Gastón Rodríguez (4 goals) |
| Pattern La1: | _penarol1617h |
| Pattern B1: | _penarol1617h |
| Pattern Ra1: | _penarol1617h |
| Pattern Sh1: | _shorts |
| Pattern So1: | _socks |
| Leftarm1: | FFFFFF |
| Body1: | FFFFFF |
| Rightarm1: | FFFFFF |
| Shorts1: | 000000 |
| Socks1: | 000000 |
| Pattern La2: | _penarol1617a |
| Pattern B2: | _penarol1617a |
| Pattern Ra2: | _penarol1617a |
| Pattern Sh2: | _penarol1617a |
| Pattern So2: | _penarol1617a |
| Leftarm2: | FFFFFF |
| Body2: | FFFFFF |
| Rightarm2: | FFFFFF |
| Shorts2: | FFFFFF |
| Socks2: | FFDF00 |
| Pattern Name3: | Alternative |
| Pattern La3: | _penarol1617h |
| Pattern B3: | _penarol17t |
| Pattern Ra3: | _penarol1617h |
| Shorts3: | 000000 |
| Socks3: | 000000 |
The 2017 Uruguayan Primera División season is Peñarol's 117th consecutive season in the top-flight of Uruguayan football, and 126th year in existence as a football club. They entered this season looking to rebound from a disappointing 2016 season, when they finished 14th in the table. The season covers the period from 5 February 2017 to the end of the same year, marking the transition from a biannual season to an annual season.
| No. | Pos. | Player | Previous Club | Type of Transfer | Reference | |
|---|---|---|---|---|---|---|
| 23 | FW | Mauricio Affonso | Racing Club de Montevideo | End of Loan | ||
| FW | Octavio Colo | Racing Club de Montevideo | End of Loan | |||
| FW | Gabriel Leyes | Plaza Colonia | End of Loan | |||
| DF | Defensa y Justicia | End of Loan | ||||
| GK | Washington Aguerre | Cerro Largo F.C. | End of Loan | |||
| 21 | DF | Ramón Arias | Liga de Quito | Transfer | [1] | |
| 19 | FW | Lucas Cavallini | C.A. Fénix | Transfer | ||
| 12 | GK | Kevin Dawson | Plaza Colonia | Loan | ||
| 27 | DF | Lucas Hernández | C.A. Cerro | Loan | ||
| 24 | DF | Iván Villalba | Rubio Ñú | Loan | ||
| 10 | MF | Matías Mier | Muaither SC | Free | ||
| 7 | MF | Cristian Rodríguez | C.A. Independiente | Free | ||
| 3 | CB | Ronaldo Conceição | Atlético Minero | Free |
Peñarol qualified for the 2017 Copa Libertadores group stage after becoming champion of the 2015-16 Primera División. The club entered sorting from Pot 1 as Uruguay 1.