The 2011–12 Top 14 competition was a French domestic rugby union club competition operated by the Ligue Nationale de Rugby (LNR). Home-and-away play began on August 26, 2011. Two new teams from the 2010–11 Rugby Pro D2 season were promoted to Top 14 this year, Lyon and Bordeaux Bègles in place of the two relegated teams, La Rochelle and Bourgoin.

The Top 14 is a professional rugby union club competition that is played in France. Created in 1892, the Top 14 is at the top of the national league system operated by the France National Rugby League, also known by its French initialism of LNR. There is promotion and relegation between the Top 14 and the next level down, the Rugby Pro D2. The fourteen best rugby teams in France participate in the competition, hence the name Top 14. The competition was previously known as the Top 16.