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LPGA Tour
| Year | Winner | Score | Course |
|---|---|---|---|
| 2025 | Nasa Hataoka | - | Japan |
| 2024 | Rio Takeda | - | Japan |
| 2023 | Mone Inami | - | Japan |
| 2022 | Gemma Dryburgh | - | Japan |
| 2021 | Tournament removed from schedule | - | Japan |
| 2020 | Tournament not co-sanctioned | - | Japan |
| 2019 | Ai Suzuki | - | Japan |
| 2018 | Nasa Hataoka | - | Japan |
| 2017 | Shanshan Feng | - | Japan |
| 2016 | Shanshan Feng | - | Japan |
| 2015 | Ahn Sun-ju | - | Japan |
| 2014 | Mi Hyang Lee | - | Japan |
| 2013 | Teresa Lu | - | Japan |
| 2012 | Stacy Lewis | - | Japan |
| 2011 | Momoko Ueda | - | Japan |
| 2010 | Jiyai Shin | - | Japan |
| 2009 | Bo Bae Song | - | Japan |
| 2008 | Jiyai Shin | - | Japan |
| 2007 | Momoko Ueda | - | Japan |
| 2006 | Karrie Webb | - | Japan |
| 2005 | Annika Sörenstam | - | Japan |
| 2004 | Annika Sörenstam | - | Japan |
| 2003 | Annika Sörenstam | - | Japan |
| 2002 | Annika Sörenstam | - | Japan |
| 2001 | Annika Sörenstam | - | Japan |
| 2000 | Lorie Kane | - | Japan |
| 1999 | Maria Hjorth | - | Japan |
| 1998 | Hiromi Kobayashi | - | Japan |
| 1997 | Liselotte Neumann | - | Japan |
| 1996 | Mayumi Hirase | - | Japan |
| 1995 | Woo-Soon Ko (1*) | - | Japan |
| 1994 | Woo-Soon Ko (1*) | - | Japan |
| 1993 | Betsy King | - | Japan |
| 1992 | Betsy King | - | Japan |
| 1991 | Liselotte Neumann | - | Japan |
| 1990 | Debbie Massey | - | Japan |
| 1989 | Elaine Crosby | - | Japan |
| 1988 | Patty Sheehan | - | Japan |
| 1987 | Yuko Moriguchi | - | Japan |
| 1986 | Ai-Yu Tu (1*) | - | Japan |
| 1985 | Jane Blalock | - | Japan |
| 1984 | Nayoko Yoshikawa | - | Japan |
| 1983 | Pat Bradley | - | Japan |
| 1982 | Nancy Lopez | - | Japan |
| 1981 | Patty Sheehan | - | Japan |
| 1980 | Tatsuko Ohsako | - | Japan |
| 1979 | Amy Alcott | - | Japan |
| 1978 | Michiko Okada | - | Japan |
| 1977 | Debbie Massey | - | Japan |
| 1976 | Donna Caponi | - | Japan |
Facts from Wikidata (CC0) and English Wikipedia (CC BY-SA 4.0), restated in our own words, with the PGA of America history pages as a second check where it publishes one. Last checked 2026-11-05. Sources