1904–05 Northern Rugby Football Union season

Holbeck and South Shields dropped out, reducing the competition to 15 teams.

[1] Birkenhead resigned after 4 games, the results of which were struck out of the table.

They lost all four games, conceding 93 points and scoring none.

On 4 March 1905, a record 11 tries were scored by George West (Hull Kingston Rovers) v Brookland Rovers in the Northern Union Challenge Cup.

except Lancaster, were elected to the new single top division, the NRFU Championship.