1988–89 French Rugby Union Championship
The 1988–89 French Rugby Union Championship was won by Toulouse that beat Toulon in the final.
Toulouse won his 10th bouclier de Brennus, the third in the 80's.
Formula
- The tournament was played by 80 clubs divided in sixteen pools of five..
- The two better of each pool were admitted to the group A to play for the title
- In the second round the 32 clubs of group A were divided in four pools of eight.
- The four better of each pool of group A were qualified to play the knockout stage
Group A Qualification to knockout stage
The teams are listed as the ranking, in bold the teams admitted to "last 16" round."Last 16"
In bold the clubs qualified for the quarter of finals.| Team 1 | Team 2 | 1st match | 2nd match |
| Agen | Dax | 15-15 | 41-15 |
| Racing | Tarbes | 16-15 | 0-22 |
| Bègles-Bordeaux | Toulouse | 3-47 | 15-27 |
| Lourdes | Blagnac SCR | 6-10 | 24-9 |
| Graulhet | Grenoble | 3-36 | 9-15 |
| Narbonne | Bayonne | 39-9 | 24-18 |
| Montferrand | Touloun | 21-17 | 9-29 |
| Brive | Béziers | 12-22 | 6-32 |
Quarter of finals
In bold the clubs qualified for the next round| Team 1 | Team 2 | Results |
| Agen | Tarbes | 12-9 |
| Toulouse | Lourdes | 41-15 |
| Grenoble | Narbonne | 13-24 |
| Toulon | Béziers | 19-12 |