The Netherlands Football League Championship 1905–1906 was contested by sixteen teams participating in two divisions. The national champion would be determined by a play-off featuring the winners of the eastern and western football division of the Netherlands. HBS Craeyenhout won this year's championship by beating PW 3-2 and 4–2.
Divisions
Eerste Klasse East
Eerste Klasse West
Championship play-off
HBS Craeyenhout won the championship.
References RSSSF Netherlands Football League Championships 1898-1954 RSSSF Eerste Klasse Oost RSSSF Eerste Klasse West