| Year: | 2005 |
| Tour: | Challenge Tour |
| Regular Season: | – |
| No Of Events: | 30 |
| Most Wins: |  Rafael Gómez (2) Brad Sutterfield (2)Marc Warren (2)  Fredrik Widmark (2) |
| Honor1: | Rankings |
| Honoree1: | Marc Warren |
| Prevseason: | 2004 |
| Nextseason: | 2006 |
The 2005 Challenge Tour was the 17th season of the Challenge Tour, the official development tour to the European Tour.
The following table lists official events during the 2005 season.[1]
| Date | Tournament | Host country | Purse (€) | Winner | OWGR points | Other tours | Notes | |
|---|---|---|---|---|---|---|---|---|
| 28 Nov | Mexico | US$300,000 | Rafael Gómez (1) | 6 | New to Challenge Tour | |||
| 5 Dec | Panama | US$200,000 | Richard McEvoy (1) | 6 | New to Challenge Tour | |||
| 12 Dec | Peru | US$168,000 | Brad Sutterfield (1) | 6 | New to Challenge Tour | |||
| 13 Feb | Costa Rica | US$125,000 | Kyle Dobbs (1) | 6 | ||||
| 20 Feb | Panama | US$125,000 | Kevin Haefner (1) | 6 | ||||
| 27 Feb | Guatemala | US$125,000 | César Monasterio (1) | 6 | ||||
| 21 Mar | Kenya | 160,000 | Daniel Vancsik (3) | 6 | ||||
| 10 Apr | Portugal | 600,000 |  Robert-Jan Derksen (1) | 16 | ||||
| 1 May | Spain | 115,000 |  Tomás Jesús Muñoz (1) | 6 | ||||
| 8 May | Wales | 125,000 |  Olivier David (1) | 6 | ||||
| 15 May | Italy | 120,000 | Rafael Gómez (2) | 6 | ||||
| 29 May | Morocco | 130,000 | Fredrik Widmark (2) | 6 | ||||
| 12 Jun | Denmark | 115,000 |  Toni Karjalainen (1) | 6 | New tournament | |||
| 19 Jun | France | 400,000 | Joakim Bäckström (n/a) | 16 | ||||
| 26 Jun | Germany | 115,000 | Gareth Davies (2) | 6 | ||||
| 3 Jul | Spain | 120,000 | Benn Barham (2) | 6 | New tournament | |||
| 10 Jul | France | 120,000 | Ilya Goroneskoul (1) | 6 | ||||
| 16 Jul | Italy | 115,000 | Fredrik Widmark (3) | 6 | ||||
| 31 Jul | Ireland | 130,000 | Marc Warren (1) | 6 | New tournament | |||
| 14 Aug | Russia | US$500,000 | Mikael Lundberg (2) | 16 | ||||
| 21 Aug | Switzerland | 165,000 | Marc Warren (2) | 6 | ||||
| 21 Aug | Sweden | SKr 1,000,000 | David Patrick (1) | 6 | ||||
| 27 Aug | England | 150,000 | Andrés Romero (1) | 6 | ||||
| 4 Sep | Austria | 150,000 | Michael Hoey (1) | 6 | ||||
| 11 Sep | Sweden | SKr 1,000,000 |  Morten Hagen (1) | 6 | ||||
| 18 Sep | Netherlands | 115,000 | Per G. Nyman (2) | 6 | New tournament | |||
| 25 Sep | Kazakhstan | 250,000 |  Stephen Browne (2) | 6 | New tournament | |||
| 2 Oct | France | 115,000 | Brad Sutterfield (2) | 6 | ||||
| 9 Oct | Spain | 450,000 | John Bickerton (2) | 16 | New tournament | |||
| 22 Oct | Italy | 250,000 | Carl Suneson (5) | 6 | Tour Championship |
The rankings were based on prize money won during the season, calculated in Euros.[2] [3] The top 20 players on the rankings earned status to play on the 2006 European Tour.[3]
| Rank | Player | Prize money (€) | |
|---|---|---|---|
| 1 | 103,577 | ||
| 2 | 103,129 | ||
| 3 | 99,750 | ||
| 4 | 94,335 | ||
| 5 | 90,620 |