1903–04 Northern Rugby Football Union season

The 1903–04 Northern Rugby Football Union season was the ninth season of rugby league football.

Season summary
The League Champions were Bradford and the Challenge Cup Winners were Halifax.

Keighley and Huddersfield were demoted from the top division and replaced by Wakefield Trinity (champions) and St. Helens.

As the top two teams had finished level on points and Points Difference had not been introduced as a tie breaker yet, despite having a worse points difference, Bradford contested a play-off with Salford, that Bradford won 5-0.

In the Second Division, Manningham and Stockport were replaced by Pontefract, reducing the competition to 17 teams. Birkenhead Wanderers dropped the Wanderers from their name.

The second promotion place had to be decided by a play-off as Points Difference had not yet been introduced as a tie breaker. St. Helens beat Holbeck 7-0.

There was no county league competition this season.

Internationals
On 5 April 1904, the first ever International Rugby League match took place between England and Other Nationalities. It was played at Central Park, Wigan, having originally been scheduled for New Year's Day in Oldham. England lost 3-9 in a twelve sided match, with the opposition made up of ten Welshmen and two Scots. The crowd numbered just 6,000.

Division One
Championship play-off: Bradford vs Salford 5-0

Division two
Promotion play-off: St. Helens vs Holbeck 7-0

Challenge Cup
Halifax beat Warrington 8-3 in the final at Salford's The Willows before a paying crowd of 17,041, plus 1,000 additional guests, to become the second team to record back-to-back Cup wins. Halifax wouldn’t reach another final until 1921 nor win the Cup again until 1931.