(D)：Difending Champion
| Date | Championships | Course | Venue | Champion | |
| 5/11 – 5/12 | 14th 2006 Japan Women’s Senior Golf Championship | Fukushima Ishikawa Country Club East/Center Course | FUKUSHIMA | Keiko Hayashi | |
| 6/20 – 6/24 | 48th 2006 Japan Women’s Amateur Golf Championship | Takanodai Country Club | CHIBA | Sakurako Mori | |
| 7/4 – 7/8 | 91st 2006 Japan Amateur Golf Championship | Higashi Hirono Golf Club | HYOGO | Kyung-Tae Kim | |
| 8/16 – 8/18 | 12th 2006 Japan Junior Golf Championship Boys Division 15-17 | Kasumigaseki Country Club West Course | SAITAMA | Dan Maeda | |
| 8/17 – 8/18 | 12th 2006 Japan Junior Golf Championship Boys Division 12-14 | Kasumigaseki Country Club East Course | SAITAMA | Satoshi Hara | |
| 8/17 – 8/18 | 12th 2006 Japan Junior Golf Championship Girls Division 15-17 | Kasumigaseki Country Club East Course | SAITAMA | Mika Miyazato | |
| 8/17 – 8/18 | 12th 2006 Japan Junior Golf Championship Girls Division 12-14 | Kasumigaseki Country Club East Course | SAITAMA | Ai Miyazawa | |
| 8/22 – 8/25 | 60th 2006 Japan Collegiate Golf Championship | Edosaki Country Club East Course | IBARAKI | Yuta Ikeda | |
| 8/23 – 8/25 | 43rd 2006 Japan Women’s Collegiate Golf Championship | Edosaki Country Club South Course | IBARAKI | Erina Hara | |
| 9/28 – 10/1 |  |
39th 2006 Japan Women’s Open Golf Championship | Ibaraki Country Club West Course | OSAKA | Jeong Jang |
| 10/12 – 10/15 | |
71st 2006 Japan Open Golf Championship | Kasumigaseki Country Club West Course | SAITAMA | Paul Sheehan |
| 10/26 – 10/29 | |
16th 2006 Japan Senior Open Golf Championship | Kuwana Country Club | MIE | Tsuneyuki Nakajima |
| 11/6 – 11/7 | 13th 2006 Japan Mid-Senior Golf Championship | Elleair Golf Club Matsuyama | EHIME | Isamu Shimizu | |
| 11/6 – 11/7 | 13th 2006 Japan Grand-Senior Golf Championship | Elleair Golf Club Matsuyama | EHIME | Osamu Sannomiya | |
| 11/8 – 11/10 | 28th 2006 Japan Senior Golf Championship | Takamatsu Grand Country Club Kaniwa Course | KAGAWA | Shigenobu Okawa | |
| 11/15 – 11/17 | 11th 2006 Japan Mid-Amateur Golf Championship | JFE Setonaikai Golf Club | OKAYAMA | Masayoshi Tanaka | |
| 11/16 – 11/17 | 11th 2006 Japan Women’s Mid-Amateur Golf Championship | Tanabe Country Club | KYOTO | Atsuko Nishiyama | |