| 1930–31 Northern Rugby Football League season | |
| League: | Championship |
| Duration: | 38 Rounds |
| No Of Teams: | 28 |
| Season Champs: | Swinton (3rd title) |
| Season Champ Name: | Champions |
| League Leaders: | Swinton |
| League Leaders Name: | League Leaders |
| Second Place: | Leeds |
| Top Scorer: | Jim Sullivan (Wigan Warriors) (278) |
| Top Try Scorer: |  Eric Harris (Leeds) (58) |
| Prevseason Link: | 1929–30 Northern Rugby Football League season |
| Prevseason Year: | 1929–30 |
| Nextseason Link: | 1931–32 Northern Rugby Football League season |
| Nextseason Year: | 1931–32 |
The 1930–31 Rugby Football League season was the 36th season of rugby league football.
Swinton won their third Championship when they defeated Leeds 14-7 in the play-off final. They had also finished the regular season as league leaders.
The Challenge Cup Winners were Halifax who beat York 22-8.
The format of the competition was changed so that all clubs played the same number of matches, and percentages were done away with.[1]
Swinton won the Lancashire League, and Leeds won the Yorkshire League. St Helens Recs beat Wigan 18–3 to win the Lancashire County Cup, and Leeds beat Huddersfield 10–2 to win the Yorkshire County Cup.
| width=20 abbr="Position" | width=175 | Team | width=20 abbr="Played" | Pld | width=20 abbr="Won" | W | width=20 abbr="Drawn" | D | width=20 abbr="Lost" | L | width=20 abbr="Points for" | PF | width=20 abbr="Points against" | PA | width=20 abbr="Points" | Pts | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Swinton | 38 | 31 | 2 | 5 | 504 | 156 | 64 | |||||||||
| 2 | Leeds | 38 | 29 | 1 | 8 | 695 | 258 | 59 | |||||||||
| 3 | Wigan | 38 | 28 | 2 | 8 | 657 | 199 | 58 | |||||||||
| 4 | Oldham | 38 | 27 | 4 | 7 | 464 | 178 | 58 | |||||||||
| 5 | Huddersfield | 38 | 27 | 2 | 9 | 545 | 272 | 56 | |||||||||
| 6 | Halifax | 38 | 25 | 3 | 10 | 405 | 283 | 53 | |||||||||
| 7 | St. Helens | 38 | 25 | 1 | 12 | 502 | 344 | 51 | |||||||||
| 8 | Hunslet | 38 | 24 | 2 | 12 | 523 | 278 | 50 | |||||||||
| 9 | Salford | 38 | 23 | 3 | 12 | 420 | 256 | 49 | |||||||||
| 10 | Warrington | 38 | 23 | 2 | 13 | 447 | 291 | 48 | |||||||||
| 11 | York | 38 | 23 | 1 | 14 | 441 | 361 | 47 | |||||||||
| 12 | St. Helens Recs | 38 | 21 | 2 | 15 | 436 | 243 | 44 | |||||||||
| 13 | Hull Kingston Rovers | 38 | 21 | 0 | 17 | 345 | 399 | 42 | |||||||||
| 14 | Wakefield Trinity | 38 | 20 | 0 | 18 | 510 | 438 | 40 | |||||||||
| 15 | Wigan Highfield | 38 | 17 | 3 | 18 | 398 | 435 | 37 | |||||||||
| 16 | Hull | 38 | 17 | 2 | 19 | 398 | 428 | 36 | |||||||||
| 17 | Broughton Rangers | 38 | 15 | 5 | 18 | 376 | 366 | 35 | |||||||||
| 18 | Dewsbury | 38 | 14 | 2 | 22 | 418 | 406 | 30 | |||||||||
| 19 | Barrow | 38 | 12 | 6 | 20 | 350 | 481 | 30 | |||||||||
| 20 | Castleford | 38 | 15 | 0 | 23 | 351 | 539 | 30 | |||||||||
| 21 | Leigh | 38 | 11 | 3 | 24 | 248 | 479 | 25 | |||||||||
| 22 | Widnes | 38 | 11 | 2 | 25 | 245 | 450 | 24 | |||||||||
| 23 | Batley | 38 | 11 | 1 | 26 | 245 | 505 | 23 | |||||||||
| 24 | Rochdale Hornets | 38 | 10 | 2 | 26 | 330 | 557 | 22 | |||||||||
| 25 | Keighley | 38 | 8 | 0 | 30 | 242 | 705 | 16 | |||||||||
| 26 | Featherstone Rovers | 38 | 7 | 1 | 30 | 265 | 486 | 15 | |||||||||
| 27 | Bramley | 38 | 5 | 3 | 30 | 251 | 636 | 13 | |||||||||
| 28 | Bradford Northern | 38 | 4 | 1 | 33 | 227 | 809 | 9 | |||||||||
See main article: 1930–31 Challenge Cup.
Halifax beat York 22-8 in the final at Wembley before a crowd of 40,368.
This was Halifax’s third Challenge Cup final win in four Cup Final appearances.
To date this was the only Challenge Cup Final appearance by York.[2]