| Suntory Open | |
| Location: | Inzai, Chiba, Japan |
| Establishment: | 1973 |
| Course: | Sobu Country Club |
| Par: | 70 |
| Yardage: | 7143yd |
| Month Played: | September |
| Tour: | Japan Golf Tour |
| Format: | Stroke play |
| Final Year: | 2007 |
| Aggregate: | 266 Yang Yong-eun (2006) |
| To-Par: | −20 Yoshitaka Yamamoto (1975) |
| Final Champion: |  Hideto Tanihara |
| Map: | Japan#Japan Chiba Prefecture |
| Map Label: | Sobu CC |
| Map Relief: | yes |
| Map Size: | 200 |
| Coordinates: | 35.787°N 140.179°W |
The Suntory Open was a professional golf tournament on the Japan Golf Tour. It was founded in 1973 by Suntory, when it was held at the Ashitaka 600 club.[1] The following year it was held at Narashino Country Club. It remained at Narashino until 1998, when it moved to Sobu Country Club.
The prize fund for the final tournament in 2007 was ¥100,000,000 with ¥20,000,000 going to the winner.
| Year(s) | Host course | Location | |
|---|---|---|---|
| 1998–2007 | Sobu Country Club | Inzai, Chiba | |
| 1974–1997 | Inzai, Chiba | ||
| 1973 | Ashitaka 600 Club | Numazu, Shizuoka |
| Year | Winner | Score | To par | Margin of victory | Runner(s)-up | ||
|---|---|---|---|---|---|---|---|
| 202 | −8 | 2 strokes | [2] | ||||
| 266 | −14 | 6 strokes | |||||
| 267 | −13 | 2 strokes | |||||
| 267 | −13 | 3 strokes | |||||
| 276 | −8 | 2 strokes | |||||
| Shingo Katayama (2) | 269 | −15 | 4 strokes | ||||
| 268 | −16 | 3 strokes | |||||
| 273 | −11 | 1 stroke | |||||
| 276 | −8 | 1 stroke | |||||
| 274 | −10 | 3 strokes | |||||
| 274 | −14 | 3 strokes | |||||
| 272 | −16 | 3 strokes | |||||
| 273 | −15 | 3 strokes | |||||
| 277 | −11 | Playoff | |||||
| 282 | −6 | 1 stroke | |||||
| Naomichi Ozaki (2) | 279 | −9 | 2 strokes | ||||
| 276 | −12 | 2 strokes | |||||
| 271 | −17 | 1 stroke | [3] | ||||
| 276 | −12 | Playoff | |||||
| Tateo Ozaki (2) | 274 | −14 | 3 strokes | ||||
| 278 | −10 | 3 strokes | |||||
 Graham Marsh (2) | 275 | −13 | Playoff | ||||
| 275 | −13 | Playoff | |||||
| 271 | −17 | 2 strokes | [4] | ||||
| 274 | −14 | 1 stroke | [5] | ||||
| 207 | −9 | 2 strokes | [6] | ||||
 Bill Rogers (2) | 270 | −18 | 2 strokes | [7] | |||
| 278 | −10 | 2 strokes | [8] | ||||
| Masaji Kusakabe (2) | 277 | −11 | 1 stroke | [9] | |||
| 281 | −7 | 1 stroke | [10] | ||||
| 279 | −9 | 3 strokes | [11] | ||||
| 273 | −15 | 3 strokes | [12] | ||||
| 268 | −20 | 2 strokes | [13] | ||||
| 272 | −16 | 3 strokes | [14] | ||||
| 270 | −14 | 1 stroke | [15] |