2012–13 Primera B Nacional
| Season | 2012–13 | 
|---|---|
| Champions | Rosario Central (1st divisional title)  | 
| Promoted | Rosario Central Gimnasia y Esgrima (LP) Olimpo  | 
| Relegated | Deportivo Merlo Nueva Chicago  | 
| Matches played | 380 | 
| Goals scored | 775 (2.04 per match) | 
| Top goalscorer | Luis Rodriguez 20 goals | 
← 2011–12  2013–14 →   | |
The 2012–13 Argentine Primera B Nacional was the 27th season of second division professional of football in Argentina. A total of 20 teams competed; the champion, runner-up and third-placed team were promoted to Argentine Primera División.