| Japan | |
| Gender: | women |
| Type: | U20 |
| Image Border: | yes |
| Federation: | Japan Volleyball Association |
| Confederation: | AVC |
| World Champs Apps: | 16 |
| World Champs First: | 1977 |
| World Champs Best: | Gold : (2019) |
| Regional Cup Apps: | 18 |
| Regional Cup First: | 1980 |
| Regional Cup Best: | Gold : (1984, 1986, 1988, 1990, 2008). |
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The Japan women's national under-20 volleyball team represents Japan in women's under-20 volleyball events, it is controlled and managed by the Japanese Volleyball Association that is a member of Asian volleyball body Asian Volleyball Confederation (AVC) and the international volleyball body government the Fédération Internationale de Volleyball (FIVB).
Champions Runners up Third place Fourth place
| FIVB U20 World Championship[1] | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Year | Round | Position | Squad | ||||||
 1977 | Semifinals | Third place | Squad | ||||||
 1981 | Semifinals | Third place | Squad | ||||||
 1985 | Final | Runners-Up | Squad | ||||||
 1987 | Semifinals | 4th place | Squad | ||||||
 1989 | Semifinals | Third place | Squad | ||||||
| 1991 | Semifinals | Third place | Squad | ||||||
| 1993 | 7th place | Squad | |||||||
 1995 | Semifinals | 4th place | Squad | ||||||
 1997 | Semifinals | 4th place | Squad | ||||||
 1999 | 6th place | Squad | |||||||
 2001 | Didn't Qualify | ||||||||
| 2003 | |||||||||
 2005 | 5th place | Squad | |||||||
| 2007 | Semifinals | Third place | Squad | ||||||
| 2009 | Didn't Qualify | ||||||||
| 2011 | 11th place | Squad | |||||||
 2013 | Final | Runners-Up | Squad | ||||||
| 2015 | Semifinals | 4th place | Squad | ||||||
| 2017 | Semifinals | Third place | |||||||
| 2019 | Final | First place | Squad | ||||||
 2021 | withdrew | ||||||||
| Total | 1 Titles | 17/21 | — | — | — | — | — | — | |
The following is the Japanese roster for the 2019 FIVB Volleyball Women's U20 World Championship.[2]
Head coach: Noboru Aihara
| No. | Name | Pos. | Date of birth | Height | Weight | Spike | 2019 club |
|---|---|---|---|---|---|---|---|
| Miyu Nakagawa | OP/OH | 1.830NaN0 | 65kg (143lb) | 311cm (122inches) |  Hisamitsu Springs | ||
| Nichika Yamada | MB | 1.840NaN0 | 73kg (161lb) | 301cm (119inches) | NEC Red Rockets | ||
| Mayu Ishikawa | OH | 1.710NaN0 | 68kg (150lb) | 300cm (100inches) | Toray Arrows | ||
| Shion Hirayama | MB | 1.80NaN0 | 68kg (150lb) | 295cm (116inches) | Hisamitsu Springs | ||
| Yuki Nishikawa | OH | 1.830NaN0 | 65kg (143lb) | 300cm (100inches) | JT Marvelous | ||
| Haruna Soga | OP | 1.730NaN0 | 65kg (143lb) | 306cm (120inches) | NEC Red Rockets | ||
| Ameze Miyabe | OH | 1.720NaN0 | 54kg (119lb) | 300cm (100inches) | Kinrankai High School | ||
| Ayaka Araki | MB | 1.840NaN0 | 76kg (168lb) | 295cm (116inches) | Higashi Kyushu Ryukoku | ||
| Minami Nishimura | OH/L | 1.680NaN0 | 61kg (134lb) | 284cm (112inches) | Okayama Seagulls | ||
| Rena Mizusugi | L | 1.650NaN0 | 50kg (110lb) | 265cm (104inches) | Toray Arrows | ||
| Kanon Sonoda | S | 1.580NaN0 | 55kg (121lb) | 286cm (113inches) | PFU BlueCats | ||
| Tsukasa Nakagawa | S | 1.590NaN0 | 60kg (130lb) | 283cm (111inches) | Tokai University | ||