The 2005–06 Top 14 competition was the 107th French domestic rugby union club competition operated by the Ligue Nationale de Rugby (LNR) and the 1st using the name Top 14. Previously the league was known as Top 16 but the restructuring of the league at the end of the 2004–05 season meant that it shrank from 16 to 14 clubs. Toulon were the only promoted team having won the 2004–05 Pro D2.