| 2001 | Shingo KATAYAMA | 271 (-13) 64-70-70-67 | Ibaraki Golf Club East Course （IBARAKI） | 7049 | 71 |
| 2000 | Shingo KATAYAMA | 280 (-4) 70-70-70-70 | Ibaraki Golf Club East Course （IBARAKI） | 7078 | 71 |
| 1999 | Kyoung-Ju CHOI | *204 (-9) 65-68-71 | Ibaraki Golf Club West Course （IBARAKI） | 6975 | 71 |
| 1998 | Frankie MINOZA | 279 (-5) 71-66-69-73 | Ibaraki Golf Club East Course （IBARAKI） | 7078 | 71 |
| 1997 | Jong-Duck KIM | 278 (-10) 69-73-68-68 | Ibaraki Golf Club West Course （IBARAKI） | 7052 | 72 |
| 1996 | Yoshinori KANEKO | 278 (-10) 68-71-69-70 | Ibaraki Golf Club East Course （IBARAKI） | 7122 | 72 |
| 1995 | Peter SENIOR | 279 (-9) 69-70-67-73 | Ibaraki Golf Club East Course （IBARAKI） | 7122 | 72 |
| 1994 | Masashi OZAKI | 274 (-14) 67-68-70-69 | IBARAGI GC （IBARAKI） | 7134 | 72 |
| 1993 | Hajime MESHIAI | 275 (-13) 69-68-69-69 | IBARAGI GC （IBARAKI） | 7052 | 72 |
| 1992 | Masashi OZAKI | *286 (-2) 69-76-72-69 | IBARAGI GC （IBARAKI） | 7163 | 72 |
| 1991 | Roger MACKAY | 272 (-16) 69-67-68-68 | IBARAGI GC （IBARAKI） | – | – |
| 1990 | Frankie MINOZA | *205 (-11) 70-68-67 | IBARAGI GC （IBARAKI） | – | – |
| 1989 | Terry GALE | 284 (-4) 73-74-68-69 | Ibaraki Golf Club West Course （IBARAKI） | – | – |
| 1988 | Masashi OZAKI | 278 (-10) 69-70-69-70 | Ibaraki Golf Club East Course （IBARAKI） | – | – |
| 1987 | Isao AOKI | 277 (-11) 69-67-69-72 | Ibaraki Golf Club West Course （IBARAKI） | – | – |
| 1986 | Hideto SHIGENOBU | 281 (-7) 74-67-68-72 | Ibaraki Golf Club East Course （IBARAKI） | – | – |
| 1985 | Tze-Chung CHEN | 277 (-11) 64-73-72-68 | Ibaraki Golf Club West Course （IBARAKI） | – | – |
| 1984 | John JACOBS | 283 (-5 ) 73-69-69-72 | Ibaraki Golf Club West Course （IBARAKI） | – | – |
| 1983 | Larry NELSON | 201 (-12 ) 67-65-69 | Ibaraki Golf Club East Course （IBARAKI） | – | – |
| 1982 | Tommy NAKAJIMA | 276 (-12 ) 71-66-68-71 | Ibaraki Golf Club West Course （IBARAKI） | – | – |
| 1981 | Kosaku SHIMADA | 286 (-2 ) 67-73-74-72 | Ibaraki Golf Club West Course （IBARAKI） | – | – |
| 1980 | Masashi OZAKI | 277 (-11 ) 68-70-69-70 | Ibaraki Golf Club East Course （IBARAKI） | – | – |
| 1979 | Hiroshi ISHII | 278 (-10 ) 70-68-70-70 | Ibaraki Golf Club West Course （IBARAKI） | – | – |
| 1978 | Chie-Hsiung KUO | 265 (-23 ) 69-66-64-66 | Ibaraki Golf Club East Course （IBARAKI） | – | – |
| 1977 | Ben ARDA | 282 (-6 ) 72-71-67-72 | Ibaraki Golf Club West Course （IBARAKI） | – | – |
| 1976 | Ben ARDA | 277 (-11 ) 69-68-70-70 | Sobu Country Club Sobu Course （CHIBA） | – | – |
| 1975 | Teruo SUGIHARA | 282 (-6 ) 71-74-69-68 | Sobu Country Club Sobu Course （CHIBA） | – | – |
| 1974 | Liang-Huan LU | 280 (-8 ) 71-71-68-70 | Nakayama Country Club （CHIBA） | – | – |
