The 2026 Argentine Torneo Federal A was the fourteenth season of the Torneo Federal A, the regionalised third tier of the Argentine football league system. The tournament is reserved for teams indirectly affiliated to the Asociación del Fútbol Argentino (AFA), while teams affiliated to AFA have to play the Primera B Metropolitana, which is the other third-tier competition. The competition was contested by 32 of the 36 teams that took part in the 2025 season, with one team relegated from Primera Nacional and four teams promoted from Torneo Regional Federal Amateur; Two teams were promoted to Primera Nacional and four teams were relegated to Torneo Regional Federal Amateur. The season began on March 22 and ended in December 2026.
The thirty-seven teams were divided into four zones, one with ten teams and three with nine teams in each zone and it was played in a round-robin tournament whereby each team played each one of the other teams two times. The teams placed 1st to 5th from the zone with ten teams, the teams placed 1st to 4th from each zone with nine teams and the best third place from the zones with nine teams qualified for the championship stages. The remaining teams qualify for the revalida stage.
The eighteen teams were divided into two zones with nine teams each and it was played in a round-robin tournament whereby each team played each one of the other teams one time. The teams placed 1st to 4th qualified for the third stage. The remaining ten teams qualified for the second phase of the revalida stage.
The eight teams play a two-legged tie and the winners advance to the fourth stage. The losing teams qualified for the second phase of the revalida stage.
The four teams play a two-legged tie and the winners advance to the fifth stage. The losing teams qualified for the third phase of the revalida stage.
Both tie winners will play a final match on neutral ground to decide the champion and first promoted team to Primera Nacional. The losing team qualified for the third phase of the revalida stage.
The revalida stage is divided in several phases: First, the twenty teams that did not qualify for the championship stages were divided into two zones and it was played in a round-robin tournament whereby each team played each one of the other teams one time. The teams placed 1st to 6th from each zone advance too the second phase.
The twelve teams from the first phase of revalida stage and the fourteen teams from the second and third stages of championship stages play a two-legged tie and the winners advance to the third phase.
The thirteen teams from the second phase, the losing teams from the fourth and fifth stage of championship stages, play a torneo reducido, with teams seeded according to their previous results; playing a two-legged tie over the phases. The winner of the sixth phase is promoted to Primera Nacional.
After the first phase of the revalida stage a table was drawn up with the points obtained in the first stage and the first phase of the revalida stage and the bottom two teams of each two zones were relegated to the Torneo Regional Federal Amateur, giving a total of four teams relegated.