The 2013–14 Primera B Nacional was the 28th season of professional Argentine second division.
For this season, the total teams was raised to 22; the champion, runner-up and winner of the tiebreaker playoff were promoted to Primera División.
Since Huracán and Independiente finished tied in points, a one-match playoff had to be held to determine the 3rd.
The match was played on June 11 at Estadio Único in La Plata.
Clubs with an indirect affiliation with Argentine Football Association are relegated to the Torneo Argentino A, while clubs directly affiliated face relegation to Primera B Metropolitana.