1990–91 French Rugby Union Championship

French Rugby Championship 1990–91
CountriesFrance
Number of teams80 teams
ChampionsBègles-Bordeaux (2nd title)
Runners-upToulouse

The 1990–91 French Rugby Union Championship was 99th edition of France's top division of rugby union. Bègles-Bordeaux were champions after beating Toulose in the final.

It was the club's second bouclier de Brennus after their first win in 1969.