The 1997–98 Argentine Primera B Nacional was the 12th season of second division professional of football in Argentina.
A total of 32 teams competed; the champion and runner-up were promoted to Argentine Primera División.
It was divided in 2 groups with the 16 teams that qualified from Interior and Metropolitana Zone placed 1st to 8th and were mixed.
The winning team was declared champion and was automatically promoted to Primera Division.
In the series, nicknamed the final of the century,[1][2] Talleres 4–3 on penalties after both teams tied 2–2 on aggregate.