1920–21 Netherlands Football League Championship

The Netherlands Football League Championship 1920–1921 was contested by 43 teams participating in four divisions. The national champion would be determined by a play-off featuring the winners of the eastern, northern, southern and western football division of the Netherlands. NAC won this year's championship by beating Be Quick 1887, AFC Ajax, and Go Ahead.

New entrants
Eerste Klasse East: Eerste Klasse North: Eerste Klasse South: Eerste Klasse West:
 * Promoted from 2nd Division: TSV Theole
 * Promoted from 2nd Division: GVV Groningen
 * Promoted from 2nd Division: BVV Den Bosch & SV DOSKO
 * Promoted from 2nd Division: De Spartaan