| Shigeo Nagashima Invitational Sega Sammy Cup | |
| Location: | Chitose, Hokkaido, Japan |
| Establishment: | 2005 |
| Course: | The North Country Golf Club |
| Par: | 72 |
| Tour: | Japan Golf Tour |
| Format: | Stroke play |
| Month Played: | June/July |
| Aggregate: | 265 Jbe' Kruger (2023) |
| To-Par: | −23 as above |
| Current Champion: |  Kensei Hirata |
| Map: | Japan#Japan Hokkaido |
| Map Label: | The North Country GC |
| Map Relief: | yes |
| Map Size: | 200 |
| Coordinates: | 42.817°N 141.601°W |
The is a professional golf tournament on the Japan Golf Tour. It has been played annually at The North Country Golf Club near Chitose, Hokkaido since 2005.
The tournament typically took place during the first week of July, but since 2019 it has been played in late August. The course measures 7,178 yards and the par was 72. In 2019, the purse was ¥150,000,000, with ¥30,000,000 going to the winner.
Shunsuke Sonoda set the tournament record in 2013, shooting −20 (268) a score subsequently equalled by Ryo Ishikawa in 2019.
| Year | Winner | Score | To Par | Margin of victory | Runner(s)-up | Purse (¥) | Winner's share (¥) | |
|---|---|---|---|---|---|---|---|---|
| Shigeo Nagashima Invitational Sega Sammy Cup | ||||||||
| 267 | −19 | 3 strokes | 150,000,000 | 30,000,000 | ||||
| 265 | −23 | 3 strokes | 150,000,000 | 30,000,000 | ||||
| Hiroshi Iwata (2) | 269 | −19 | 2 strokes | 120,000,000 | 24,000,000 | |||
| 268 | −20 | 2 strokes | 120,000,000 | 24,000,000 | ||||
| align=center colspan=7 | Cancelled due to the COVID-19 pandemic | |||||||
| Ryo Ishikawa (2) | 268 | −20 | 4 strokes | 150,000,000 | 30,000,000 | |||
| 204 | −12 | 3 strokes | 150,000,000 | 30,000,000 | ||||
| 270 | −18 | 1 stroke | 150,000,000 | 30,000,000 | ||||
| 274 | −14 | 2 strokes | 150,000,000 | 30,000,000 | ||||
| 272 | −16 | 1 stroke | 150,000,000 | 30,000,000 | ||||
| Nagashima Shigeo Invitational Sega Sammy Cup | ||||||||
| 274 | −10 | Playoff | 200,000,000 | 40,000,000 | ||||
| 268 | −20 | 3 strokes | 150,000,000 | 30,000,000 | ||||
| 269 | −19 | 2 strokes | 150,000,000 | 30,000,000 | ||||
| 273 | −15 | 4 strokes | 130,000,000 | 26,000,000 | ||||
| 275 | −13 | Playoff | 130,000,000 | 26,000,000 | ||||
| 272 | −16 | 1 stroke | 130,000,000 | 26,000,000 | ||||
| 275 | −13 | 2 strokes | 150,000,000 | 30,000,000 | ||||
| 276 | −12 | 3 strokes | 150,000,000 | 30,000,000 | ||||
| Sega Sammy Cup | ||||||||
| 276 | −12 | 4 strokes | 120,000,000 | 24,000,000 | ||||
| 275 | −13 | 1 stroke | 120,000,000 | 24,000,000 | ||||