2017–18 Primera B Nacional
| Season | 2017–18 |
|---|---|
| Dates | 15 September 2017– April 2018 |
| Champions | Aldosivi (1st title) |
| Promoted | Aldosivi San Martín (T) |
| Relegated | Juventud Unida (G) Boca Unidos All Boys Estudiantes (SL) Flandria Deportivo Riestra |
| Matches | 300 |
| Goals | 603 (2.01 per match) |
← 2016–17 2018–19 →
All statistics correct as of 30 April 2018. | |
The 2017–18 Argentine Primera B Nacional was the 33rd season of the Argentine second division. The season began in September 2017 and ended in June 2018. Twenty-five teams competed in the league, seventeen returning from the 2016–17 season, four teams that were relegated from Primera División and two teams promoted from Federal A and B Metropolitana.