| 1911–12 Northern Rugby Football Union season | |
| League: | Championship |
| No Of Teams: | 27 |
| Season: | 1911–12 Season |
| Season Champs: | Huddersfield (1st title) |
| Season Champ Name: | Champions |
| League Leaders: | Huddersfield |
| League Leaders Name: | League Leaders |
| Second Place: | Wigan |
| Top Scorer: | Alf Carmichael (Hull Kingston Rovers) (254) |
| Top Try Scorer: |  Albert Rosenfeld (Huddersfield) (76) |
| Leave: | Merthyr Tydfil |
| Leave Reason: | Resigned from the League |
| Prevseason Link: | 1910–11 Northern Rugby Football Union season |
| Prevseason Year: | 1910–11 |
| Nextseason Link: | 1912–13 Northern Rugby Football Union season |
| Nextseason Year: | 1912–13 |
The 1911–12 Northern Rugby Football Union season was the 17th season of rugby league football.
Huddersfield finished the regular season as league leaders and then went on to claim their first Championship by defeating Wigan 13-5 in the play-off final.
The Challenge Cup Winners were Dewsbury who defeated Oldham 8-5.
Merthyr Tydfil dropped out of the league.[1]
Huddersfield's Australian winger Albert Rosenfeld set a new record for tries in a season with 76.[2]
Wigan won the Lancashire League, and Huddersfield won the Yorkshire League. Rochdale Hornets beat Oldham 12–5 to win the Lancashire Cup, and Huddersfield beat Hull Kingston Rovers 22–10 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 | width=20 abbr=”Win Percentage” | Pct | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Huddersfield | 36 | 31 | 1 | 4 | 996 | 238 | 63 | 87.5 | ||||||||||
| 2 | Wigan | 34 | 27 | 1 | 6 | 483 | 215 | 55 | 80.88 | ||||||||||
| 3 | Hull Kingston Rovers | 34 | 25 | 0 | 9 | 597 | 294 | 50 | 73.52 | ||||||||||
| 4 | Hunslet | 34 | 24 | 1 | 9 | 554 | 286 | 49 | 72.05 | ||||||||||
| 5 | Oldham | 34 | 23 | 1 | 10 | 562 | 299 | 47 | 69.11 | ||||||||||
| 6 | Wakefield Trinity | 34 | 22 | 1 | 11 | 447 | 405 | 45 | 66.17 | ||||||||||
| 7 | St. Helens | 32 | 21 | 0 | 11 | 527 | 283 | 42 | 65.62 | ||||||||||
| 8 | Dewsbury | 32 | 18 | 1 | 13 | 403 | 341 | 37 | 57.81 | ||||||||||
| 9 | Broughton Rangers | 34 | 19 | 1 | 14 | 322 | 254 | 39 | 57.35 | ||||||||||
| 10 | Hull | 38 | 20 | 3 | 15 | 449 | 335 | 43 | 56.57 | ||||||||||
| 11 | Leeds | 34 | 19 | 0 | 15 | 467 | 331 | 38 | 55.83 | ||||||||||
| 12 | Widnes | 32 | 16 | 3 | 13 | 301 | 242 | 35 | 54.68 | ||||||||||
| 13 | Leigh | 32 | 17 | 1 | 14 | 309 | 296 | 35 | 54.68 | ||||||||||
| 14 | Halifax | 34 | 17 | 3 | 14 | 377 | 282 | 37 | 54.41 | ||||||||||
| 15 | Batley | 32 | 17 | 0 | 15 | 267 | 268 | 34 | 53.12 | ||||||||||
| 16 | Rochdale Hornets | 34 | 16 | 0 | 18 | 335 | 397 | 32 | 47.05 | ||||||||||
| 17 | York | 32 | 14 | 1 | 17 | 307 | 418 | 29 | 45.31 | ||||||||||
| 18 | Warrington | 32 | 13 | 2 | 17 | 288 | 296 | 28 | 43.75 | ||||||||||
| 19 | Barrow | 30 | 12 | 1 | 17 | 263 | 425 | 25 | 41.66 | ||||||||||
| 20 | Salford | 32 | 11 | 4 | 17 | 269 | 324 | 26 | 40.62 | ||||||||||
| 21 | Swinton | 32 | 11 | 3 | 18 | 266 | 356 | 25 | 39.06 | ||||||||||
| 22 | Keighley | 28 | 10 | 1 | 17 | 253 | 431 | 21 | 37.5 | ||||||||||
| 23 | Coventry | 34 | 6 | 2 | 26 | 208 | 646 | 14 | 20.58 | ||||||||||
| 24 | Runcorn | 28 | 5 | 1 | 22 | 147 | 369 | 11 | 19.64 | ||||||||||
| 25 | Ebbw Vale | 30 | 4 | 3 | 23 | 168 | 520 | 11 | 18.33 | ||||||||||
| 26 | Bradford Northern | 36 | 4 | 0 | 32 | 250 | 657 | 8 | 11.11 | ||||||||||
| 27 | Bramley | 30 | 1 | 3 | 26 | 133 | 740 | 5 | 8.33 | ||||||||||
Dewsbury defeated Oldham 8-5 at Leeds in front of a crowd of 15,271 to win their first Challenge Cup in their first Final appearance.[3]