1957–58 French Rugby Union Championship

The 1957–58 French Rugby Union Championship was contested by 48 clubs divided in six pools of eight.

The top five of each pool and the best two sixths (for a sum of 32 clubs) were qualified to play a play-off phase.

The championship was won by Lourdes that defeated Mazamet in the final. Le FC lourdais won the title for the third consecutive time.

Context
The 1958 Five Nations Championship was won by Ireland, France finished 3rd,

The Challenge Yves du Manoir was won by SC Mazamet that beat Mont-de-Marsan par 3-0.

Qualification round
In bold the clubs qualified for the next round

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 * width="33%" |

Poule A

 * Lourdes
 * Bègles
 * Paris Université Club
 * Auch
 * Cahors
 * Orthez
 * Biarritz 
 * Carmaux


 * width="33%" |

Poule B

 * Racing
 * Saint-Sever
 * Grenoble
 * Chambéry
 * Soustons
 * Saint-Girons
 * Tulle
 * Cognac


 * width="33%" |

Poule C

 * Lyon OU
 * Graulhet
 * Toulouse Olympique EC
 * Romans
 * Vienne
 * Lavelanet
 * Vichy
 * Stadoceste


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Poule D

 * Toulouse
 * Brive
 * La Rochelle
 * Périgueux
 * Aurillac
 * Montauban
 * Montferrand
 * Mont-de-Marsan


 * width="33%" |

Poule E

 * Angoulême
 * Perpignan
 * Tyrosse
 * Montélimar
 * Pau
 * La Voulte
 * Béziers
 * Narbonne


 * width="33%" |

Poule F

 * Stade Niortais
 * Dax
 * Bayonne
 * Bergerac
 * Agen
 * Mazamet
 * Castres
 * Touloun


 * }

"Last 32"
In bold the clubs qualified for the next round

"Last 16"
In bold the clubs qualified for the next round

Quarter of finals
In bold the clubs qualified for the next round

Final
Jean Prat conquest his sixth and last title of French Champion.