| Bridgestone Aso Open | |
| Location: | Aso, Kumamoto, Japan |
| Establishment: | 1976 |
| Course: | Aso Golf Club |
| Par: | 72 |
| Yardage: | 7078yd |
| Tour: | Japan Golf Tour |
| Format: | Stroke play |
| Month Played: | April |
| Final Year: | 1993 |
| Aggregate: | 272 Craig Parry (1989) |
| To-Par: | −16 as above |
| Final Champion: |  Shigeru Kawamata |
| Map: | Japan#Japan Kumamoto Prefecture |
| Map Label: | Aso GC |
| Map Relief: | yes |
| Map Size: | 200 |
| Coordinates: | 32.896°N 131.022°W |
The Bridgestone Aso Open was a professional golf tournament that was held in Japan. It was an event on the Japan Golf Tour from 1978 to 1993. From 1983, it was played at the Aso Golf Club near Mount Aso in Kumamoto Prefecture.
Originally contested over 36 holes as the Aso National Park Open, the tournament was extended to 54 holes in 1981, and then 72 holes from 1982.
| Year(s) | Host course | Location | |
|---|---|---|---|
| 1981, 1983–1993 | Aso Golf Club | Aso, Kumamoto | |
| 1976–1980, 1982 | Aso Kogen Hotel Golf Course | Ubuyama, Kumamoto |
| Year | Winner | Score | To par | Margin of victory | Runner(s)-up | ||
|---|---|---|---|---|---|---|---|
| Bridgestone Aso Open | |||||||
| 276 | −12 | 2 strokes | |||||
| 281 | −7 | 1 stroke | |||||
| 208 | −8 | 2 strokes | |||||
| 213 | −3 | 2 strokes | |||||
| 272 | −16 | 6 strokes | |||||
| 282 | −6 | 1 stroke | |||||
| 280 | −8 | 4 strokes | |||||
| 240 | −12 | 1 stroke | |||||
| 280 | −8 | Playoff | |||||
| 283 | −5 | Playoff | |||||
| 213 | −3 | Playoff | |||||
| 283 | −5 | 3 strokes | |||||
| Aso National Park Open | |||||||
| 213 | −3 | 1 stroke | [1] | ||||
| 109 | +1 | 1 stroke | [2] | ||||
| 149 | +5 | Playoff | |||||
| 143 | −1 | Playoff | |||||
| 1977 | 213 | −3 | 2 strokes | [3] | |||
| 1976 | 138 | −6 | 2 strokes | [4] | |||