2018–19 Primera B Nacional
| Season | 2018–19 |
|---|---|
| Dates | 25 August 2018 – 8 June 2019 |
| Champions | Arsenal (1st title) |
| Promoted | Arsenal Central Córdoba (SdE) |
| Relegated | Los Andes Olimpo |
| Matches played | 315 |
| Goals scored | 648 (2.06 per match) |
| Top goalscorer | 3 players (15 goals each) |
← 2017–18 2019–20 → | |
The 2018–19 Argentine Primera B Nacional was the 34th season of the Argentine second division. The season began on 25 August 2018 and ended on 8 June 2019. Twenty-five teams competed in the league, seventeen returning from the 2017–18 season, four teams that were relegated from Primera División and two teams promoted from Federal A and B Metropolitana.