| Association | Japan Ice Hockey Federation |
|---|---|
| Head coach |  Iwamoto Yuji |
| Assistants | Touda Hiroyasu |
| Captain | Konno Mitsuyoshi |
| First international | |
 Norway 4 - 2 Japan  (Heerenveen, Netherlands; March 16, 1982) | |
| Biggest win | |
Japan 17 - 1 Iceland  (Canazei, Italy; December 13, 2007) | |
| Biggest defeat | |
 Sweden 20 - 1 Japan (Gavle, Sweden; December 30, 1992) | |
| International record (W-L-T) | |
| 77-74-13 | |
The Japanese men's national under 20 ice hockey team is the national under-20 ice hockey team in Japan. The team represents Japan at the International Ice Hockey Federation's World Junior Hockey Championship Division I.