(D)：Difending Champion
| Date | Championships | Course | Venue | Champion | |
| 4/23 – 4/26 | Asia Golf Circuit Dunlop International Open Golf Championship | Ibaraki Golf Club West Course | IBARAKI | Isao Aoki | |
| 6/9 – 6/11 | 29th 1987 Japan Women’s Amateur Golf Championship | Nagoya Golf Club | AICHI | Asako Kita | |
| 7/2 – 7/5 |  |
20th 1987 Japan Women’s Open Golf Championship | Tsukuba Country Club | IBARAKI | Nayoko Yoshikawa |
| 8/5 – 8/7 | 1987 Japan Junior Golf Championship High School Boys | Kasumigaseki Country Club West Course | SAITAMA | Shigeki Maruyama | |
| 8/6 – 8/7 | 1987 Japan Junior Golf Championship Middle School Boys | Kasumigaseki Country Club West Course | SAITAMA | D.C.Remi | |
| 8/6 – 8/7 | 1987 Japan Junior Golf Championship Girls | Kasumigaseki Country Club West Course | SAITAMA | Mayumi Hirase | |
| 8/6 – 8/7 | 24th 1987 Japan Women’s Collegiate Golf Championship | Taiheiyo Club Rokko Course Shakunage Course | HYOGO | Aiko Hashimoto | |
| 8/19 – 8/20 | 41st 1987 Japan Collegiate Golf Championship | Kamo Country Club | HIROSHIMA | Taro Okabe | |
| 9/16 – 9/18 | 72nd 1987 Japan Amateur Golf Championship | Hamamatsu Seaside Golf Club | SHIZUOKA | Toru Suzuki | |
| 10/8 – 10/11 | |
52nd 1987 Japan Open Golf Championship | Arima Royal Golf Club East/Center Course | HYOGO | Isao Aoki |
| 10/14 – 10/15 | 9th 1987 Japan Senior Golf Championship | Sagamihara Golf Club West Course | KANAGAWA | Takayuki Misawa | |