The Campeonato Nacional de Clubes is a club rugby union competition in Argentina. Originally, the competition involved 16 teams from most provincial unions. Between 2009 and 2011, the competition was reduced to only 4 teams, 2 from the Torneo del Interior and 2 from the Torneo de la URBA. It was announced in June 2013 that after a three-year hiatus, the tournament would return with a new 16 team format to take place between March and May 2014.
From 1993 to 2008, the competition involved 16 clubs, which were divided into four different zones. The top two clubs of each zone proceeded to the quarter-finals of the competition. The 16 clubs were chosen from their own championships; eight from Buenos Aires, two each from the Northeast, Litoral and Córdoba and one from both Cuyo and Mar del Plata.
In 2009 the Torneo del Interior was re-launched for clubs outside of URBA. The new formula of this tournament coincided with a complete overhaul of the Nacional de Clubes system.
From 2009 to 2011, only 4 clubs qualified to the Nacional de Clubes, two from Interior and two from URBA. The competition started directly at the semi-final level as follows:
Semi-final 1: Winners Interior vs Runners-up URBA
Semi-final 2: Winners URBA vs Runners-up Interior
Since 2014, the competition has involved 16 clubs, with 9 qualifying from the Torneo del Interior and 7 from the URBA Top 14.