The Campeonato Argentino de Rugby 2006 was won by the selection of the U.R.B.A. (Buenos Aires) that beat in the final the selection of Unión de Rugby de Tucumàn
The 23 teams participating were divided two levels : "Campeonato" (8 teams), "Ascenso", (15 teams, divided in two zone and five pools)
The 8 teams divided in two pools of 4 teams. The first 2 to playoff. The fourth of each pools to the "finale descenso" (relegation final). The loser was relegated .
15 teams divided in two geografic zones: "North" and "South". The final for promotion between the winner of each zone.
Three pools of 3 teams. The first of each pool and the better second to semifinals-
Two pools of three teams. The winner of each Pool progressed to the zonal final.