The 1945–46 French Rugby Union Championship of first division was won by Section Paloise (Pau) that beat Lourdes in the final.
The Championship was arranged in two groups. The first with 54 clubs divided in 9 pools of six (27 qualified) and the second of almost 100 clubs that qualified 5 club.
The 32 clubs were divided in 8 pools of 4 . the first two of esch were qualified two next round.
The 16 clubs are again divided in pools of 4 club . The winner of four pools are qualified for semifinals.
Paul Moncassin, Lucien Martin, Henri Larrat, Pierre Aristouy, Edouard Salsé, Jean Lauga, Paul Theux, André Rousse, Théo Cazenave, Auguste Lassalle, Jean Estrade, Pierre Lauga, René Desclaux, Robert Duthen, Jean Carmouze
Daniel Saint-Pastous, Fernand Carassus, Eugène Buzy, Joseph Dutrey, René Chaubet, François Soro, Jean Prat, Jean Davant, René Barzu, Charles Peyrade, Guy Faget, Jésus Cano, André Chanfreau, Bettino Pallavicini, Georges Bernadet
