1990–91 Pilkington Cup

The 1990–91 Pilkington Cup was the 20th edition of England's, premier (at that time) rugby union club competition. Harlequins won the competition, for the second time, defeating Northampton 25 – 13 at Twickenham. The event was sponsored by Pilkington.

Final

 * Notes

Sponsorship
The competition was sponsored by Pilkington who had provided £700,000 over the first three seasons and agreed to a further three years worth £1,000,000.