| OKI Castellón Senior Tour Championship | |
| Location: | Castellón, Spain |
| Establishment: | 2000 |
| Course: | Club de Campo del Mediterráneo |
| Par: | 72 |
| Yardage: | 6798yd |
| Tour: | European Senior Tour |
| Format: | Stroke play |
| Month Played: | November |
| Aggregate: | 202 Denis O'Sullivan (2000) 202 Carl Mason (2003) 202 Mike Cunning (2010) |
| To-Par: | −14 Denis O'Sullivan (2000) −14 Mike Cunning (2010) |
| Final Year: | 2012 |
| Final Champion: |  Mike Cunning |
| Coordinates: | 40.034°N -0.054°W |
| Map: | Spain#Spain Valencian Community |
| Map Label: | Club de Campo |
| Map Relief: | yes |
| Map Label Position: | left |
| Map Size: | 200px |
The Seniors Tour Championship was the season ending event on men's professional golf's European Seniors Tour. It was first contested in 2000 at Abu Dhabi Golf Club by Sheraton, Abu Dhabi. In 2001 it was played at PGA Golf de Catalunya, Spain, from 2002 to 2004 at Quinta da Marinha, Portugal, in 2005 and 2006 at Riffa Views, Bahrain, in 2007 at Buckinghamshire Golf Club, England and from 2008 to 2010 at Club de Campo del Mediterráneo, Spain. In 2010 the prize fund was €400,000 with €64,433 going to the winner.
| European Senior Tour (Tour Championship) | 2000–2010 |
| Year | Winner | Score | To par | Margin of victory | Runner(s)-up | Venue | ||
|---|---|---|---|---|---|---|---|---|
| OKI Castellón Senior Tour Championship | ||||||||
| 11th | 202 | −14 | 1 stroke | |||||
| 10th | 203 | −13 | 3 strokes | |||||
| OKI Castellón Open España Senior Tour Championship | ||||||||
| 9th | 203 | −13 | 2 strokes | |||||
| The Kingdom of Bahrain Trophy Seniors Tour Championship | ||||||||
| 8th | 206 | −10 | 1 stroke | Buckinghamshire Club | ||||
| Arcapita Seniors Tour Championship | ||||||||
| 7th | 211 | −5 | Playoff | Riffa Views | ||||
| 6th | 206 | −10 | 2 strokes | Riffa Views | ||||
| Estoril Seniors Tour Championship | ||||||||
| 5th | 207 | −6 | 2 strokes | Quinta da Marinha | ||||
| 4th | 202 | −11 | 8 strokes | Quinta da Marinha | ||||
| 3rd | 208 | −5 | Playoff | Quinta da Marinha | ||||
| European Seniors Tour Championship | ||||||||
| 2nd | 210 | −6 | 1 stroke | PGA Golf de Catalunya | ||||
| Abu Dhabi European Seniors Tour Championship | ||||||||
| 1st | 202 | −14 | 1 stroke | Abu Dhabi | ||||