| Japan | |
| Gender: | men |
| Type: | U19 |
| Image Border: | yes |
| Federation: | Japan Volleyball Association |
| Confederation: | AVC |
| Olympic Apps: | No Appearances |
| World Champs Apps: | 11 |
| World Champs First: | 1989 |
| World Champs Best: | Runners-Up: (1993) |
| Regional Name: | Asian U18 Championship |
| Regional Cup Apps: | 11 |
| Regional Cup First: | 1997 |
| Regional Cup Best: | Gold: (2017, 2018). |
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The Japan men's national under-19 volleyball team represents Japan in men's under-19 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
| Year | Round | Position | Squad | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2010 | Didn't Qualify | ||||||||
 2014 | No Volleyball Event | ||||||||
 2018 | |||||||||
| Total | 0 Titles | 0/1 | |||||||
Champions Runners up Third place Fourth place
| FIVB U19 World Championship[1] | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Year | Round | Position | Squad | ||||||
| 1989 | 7th place | ||||||||
| 1991 | 6th place | ||||||||
 1993 | Runners-Up | ||||||||
| 1995 | Third place | ||||||||
 1997 | Third place | ||||||||
| 1999 | 9th place | ||||||||
 2001 | Didn't Qualify | ||||||||
 2003 | |||||||||
| 2005 | |||||||||
 2009 | 14th place | ||||||||
| 2011 | Didn't Qualify | ||||||||
 2013 | 17th place | ||||||||
| 2015 | 15th place | Squad | |||||||
 2017 | Third place | Squad | |||||||
 2019 | 6th place | Squad | |||||||
| 2021 | Withdrew | ||||||||
| 2023 | 11th place | ||||||||
| Total | 0 Titles | 12/18 | |||||||
Champions Runners up Third place Fourth place
| Asian Boys' U18 Championship | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Year | Round | Position | Squad | ||||||
| 1997 | Third place | ||||||||
 1999 | Runners-up | ||||||||
| 2001 | 6th place | ||||||||
 2003 | Withdrew | ||||||||
| 2005 | 5th place | ||||||||
| 2007 | 5th place | ||||||||
| 2008 | Runners-up | ||||||||
| 2010 | 5th place | ||||||||
| 2012 | Third place | ||||||||
| 2014 | Runners-up | ||||||||
| 2017 | Champion | ||||||||
| 2018 | Champion | ||||||||
| 2020 | Canceled | ||||||||
| 2022 | Champion | ||||||||
| Total | 3 Titles | 12/14 | |||||||
The following is the roster in the 2023 FIVB Volleyball Boys' U19 World Championship.[2]
Head coach: Hiroyuki Takeuchi
| No. | Name | Position | Date of birth | Height | Weight | Spike | Block | 2023 club | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Hyo Yamashita | 1.970NaN0 | 85kg (187lb) |  University of Tsukuba | |||||||
| Haruki Matsui | 1.990NaN0 | Aichi Gakuin University | ||||||||
| Ryugi Takata | 1.980NaN0 | 103.4kg (228lb) | 327cm (129inches) | Nippon Sport Science University | ||||||
| Ota Yoshihara | 1.830NaN0 | 72kg (159lb) | Tokai University | |||||||
| Tomorou Fujiyama | 1.880NaN0 | 74kg (163lb) | 342cm (135inches) | Nippon Sport Science University | ||||||
| Yuri Moriuchi | 1.840NaN0 | 79kg (174lb) | Nihon University | |||||||
| Haruto Taniguchi | 1.840NaN0 | 90kg (200lb) | Nihon University | |||||||
| 10 | Koshi Yamaguchi | 1.810NaN0 | 69kg (152lb) | Fukuyama Heisei University | ||||||
| 12 | Hiyori Fujita | 1.80NaN0 | 70kg (150lb) | 320cm (130inches) | Ryukoku University | |||||
| 14 | Takeru Watanabe | 1.890NaN0 | 71kg (157lb) | Meiji University | ||||||
| 16 | Shuji Yoshihara | 1.810NaN0 | 73kg (161lb) | 325cm (128inches) | Kokushikan University | |||||
| 20 | Shusei Shiotsuka | lign=center | 1.920NaN0 | 74kg (163lb) |