| 2005 Nationeal League | |
| League: | National Leagues |
| Season: | National League One |
| Season Champs: | Castleford Tigers |
| Season Champ Name: | Champions |
| League Leaders: | Whitehaven |
| League Leaders Name: | League leaders |
| Promote: | Castleford Tigers |
| Promote From: | National League One |
| Relegate: | Barrow Raiders Featherstone Rovers |
| Relegate To: | National League Two |
| Season2: | National League Two |
| League Leaders Name2: | League leaders |
| Promote2: | York City Knights |
| Promote From2: | National League Two |
| Season3: | National League Three |
| Season Champs3: | Coventry Bears |
| Season Champ Name3: | Champions |
| League Leaders3: | Bradford Dudley Hill |
| League Leaders Name3: | League leaders |
| Prevseason Link: | 2004 Rugby League National Leagues |
| Prevseason Year: | 2004 |
| Nextseason Link: | 2006 Rugby League National Leagues |
| Nextseason Year: | 2006 |
The 2005 National Leagues (known as the LHF Healthplan National Leagues due to sponsorship) were the second, third and fourth divisions of rugby league in the UK.
| Home | Score | Away | Match Information | ||
|---|---|---|---|---|---|
| width=17% | Venue | width=7% | Crowd | ||
| ELIMINATION MATCHES | |||||
| Swinton Lions | 40-28 | Hunslet Hawks | |||
| Workington Town | 47-12 | Gateshead Thunder | |||
| SEMI-FINALS | |||||
| Batley Bulldogs | 40-20 | Dewsbury Rams | |||
| Workington Town | 17-16 | Swinton Lions | |||
| ELIMINATION FINAL | |||||
| Dewsbury Rams | 26-18 | Workington Town | |||
| GRAND FINAL | |||||
| Batley Bulldogs | 28-26 | Dewsbury Rams | |||
| Position | Club | Played | Won | Drawn | Lost | Pts for | Pts agst | Points | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Bradford Dudley Hill | 18 | 17 | 0 | 1 | 840 | 253 | 34 | |
| 2 | Bramley Buffaloes | 18 | 16 | 0 | 2 | 832 | 237 | 32 | |
| 3 | St Albans Centurions | 18 | 14 | 0 | 4 | 770 | 349 | 28 | |
| 4 | Warringon Wizards | 18 | 10 | 1 | 7 | 683 | 382 | 21 | |
| 5 | Sheffield Hillsborough Hawks | 18 | 9 | 1 | 8 | 444 | 514 | 19 | |
| 6 | Hemel Stags | 18 | 8 | 0 | 10 | 409 | 523 | 16 | |
| 7 | Coventry Bears | 18 | 7 | 0 | 11 | 525 | 635 | 14 | |
| 8 | Huddersfield Underbank Rangers | 18 | 5 | 0 | 13 | 466 | 679 | 10 | |
| 9 | Gateshead Storm | 18 | 3 | 0 | 15 | 359 | 765 | 6 | |
| 10 | Essex Eels | 18 | 0 | 0 | 18 | 181 | 1194 | 0 |
St Albans Centurions 40-6 Hemel Stags
Warrington Wizards 48-12 Sheffield Hillsborough Hawks
Bradford Dudley Hill 18-19 Bramley Buffaloes
St Albans Centurions 46–24 Warrington Wizards
Bradford Dudley Hill 63-10 St Albans Centurions
Bradford Dudley Hill 28-26 Bramley Buffaloes