1990–91 Eredivisie

The Dutch Eredivisie in the 1990–91 season was contested by 18 teams. PSV won the championship.

Promotion/relegation play-offs
The number 16 of the Eredivisie would play against relegation against the runners-up of the promotion/relegation play-offs of the Eerste Divisie. The Eerste Divisie league champions and winner of the play-offs would replace the numbers 17 and 18 of this league directly.

SVV: remain in Eredivisie and merge with Dordrecht '90 NAC: remain in Eerste Divisie