| Japan | |
| Badge Size: | 140px |
| Association: | Japan Ice Hockey Federation |
| General Manager: | Yuji Iizuka |
| Asst Coach: | Kanae Aoki Masahito Haruna |
| Top Scorer: | Rui Ukita (13) |
| Most Points: | Rui Ukita (18) |
| Iihf Code: | JPN |
| First Game: | 3 - 1 (Chambéry, France; December 29, 2008) |
| Largest Win: | 7 - 0 (Miskolc, Hungary; January 13, 2016) |
| Largest Loss: | 11 - 1 (Chicago, United States; March 27, 2010) |
| World Champ2 Name: | IIHF U18 Women's World Championship |
| World Champ2 Apps: | 5 |
| World Champ2 First: | 2010 |
| World Champ2 Best: | 6th (2010) |
| Record: | 26–24–0 |
The Japanese women's national under 18 ice hockey team is the national under-18 ice hockey team of Japan. The team represents Japan at the International Ice Hockey Federation's U18 Women's World Championship and other international tournaments and events.
| Year | GP | W | L | GF | GA | Pts | Rank | |
|---|---|---|---|---|---|---|---|---|
| 4 | 4 | 0 | 18 | 5 | 15 | 9th place (1st in Division I; promoted to Top Division) | ||
 2010 | 5 | 1 | 4 | 9 | 23 | 3 | 6th place | |
 2011 | 6 | 1 | 5 | 9 | 23 | 3 | 8th place (Relegated to Division I) | |
 2012 | 5 | 3 | 2* | 14 | 7 | 11 | 11th place (3rd in Division I) | |
| 2013 | 5 | 5^ | 0 | 18 | 7 | 14 | 9th place (1st in Division I; promoted to Top Division) | |
 2014 | 5 | 2 | 3 | 14 | 17 | 6 | 7th place | |
| 2015 | 5 | 0 | 5** | 8 | 15 | 1 | 8th place (Relegated to Division I) | |
| 2016 | 5 | 5 | 0 | 18 | 2 | 15 | 9th place (1st in Division I; promoted to Top Division) | |
 2017 | 5 | 0 | 5** | 6 | 14 | 1 | 8th place (Relegated to Division I Group A) | |
 2018 | 5 | 5 | 0 | 21 | 1 | 15 | 9th place (1st in Division I Group A; promoted to Top Division) | |
 2019 | 6 | 1 | 5 | 7 | 18 | 3 | 8th place (Relegated to Division I Group A)[1] | |
| 5 | 4 | 1 | 20 | 3 | 12 | 10th place (2nd in Division I Group A)[2] | ||
| 2021 | Tournament cancelled due to COVID-19 pandemic | |||||||
| 4 | 4 | 0 | 26 | 0 | 12 | 9th place (1st in Division I Group A; promoted to Top Division)[3] | ||
| 2023 | 5 | 0 | 5 | 6 | 20 | 0 | 8th place (Relegated to Division I Group A)[4] | |
| 2024 | 5 | 5 | 0 | 21 | 4 | 15 | 9th place (1st in Division I Group A; promoted to Top Division) | |
 2025 | ||||||||
^Includes one win in extra time (in the preliminary round)
Roster for the 2024 IIHF U18 Women's World Championship Division I Group A.[5] [6]
Head coach: Yujiro Kasahara
Assistant coaches: Masahito Haruna, Kanae Aoki
| No. | Pos. | Name | Height | Weight | Birthdate | Team | |
|---|---|---|---|---|---|---|---|
| 1 | G | 1.67m (05.48feet) | 51abbr=onNaNabbr=on | 29 March 2007 | Crystal Blades | ||
| 2 | D | 1.58m (05.18feet) | 53abbr=onNaNabbr=on | 26 January 2006 | Daishin | ||
| 3 | D | 1.58m (05.18feet) | 50abbr=onNaNabbr=on | 8 July 2008 | Crystal Blades | ||
| 4 | D | 1.72m (05.64feet) | 68abbr=onNaNabbr=on | 28 April 2009 | Nikko Ice Bucks | ||
| 5 | D | 1.54m (05.05feet) | 59abbr=onNaNabbr=on | 13 November 2008 | Daishin | ||
| 6 | D | 1.63m (05.35feet) | 61abbr=onNaNabbr=on | 16 March 2006 | Daishin | ||
| 7 | D | 1.66m (05.45feet) | 70abbr=onNaNabbr=on | 2 June 2008 | TC Mikage Gretz | ||
| 9 | D | 1.76m (05.77feet) | 72abbr=onNaNabbr=on | 14 May 2006 | Vortex Sapporo | ||
| 11 | F | 1.54m (05.05feet) | 55abbr=onNaNabbr=on | 11 July 2007 | Daishin | ||
| 12 | F | 1.54m (05.05feet) | 49abbr=onNaNabbr=on | 3 October 2006 | Vortex Sapporo | ||
| 13 | F | 1.56m (05.12feet) | 48abbr=onNaNabbr=on | 16 June 2006 | Seibu Princess Rabbits | ||
| 14 | F | 1.64m (05.38feet) | 56abbr=onNaNabbr=on | 8 October 2006 | DK Peregrine | ||
| 15 | F | 1.63m (05.35feet) | 55abbr=onNaNabbr=on | 24 July 2006 | DK Peregrine | ||
| 16 | F | 1.62m (05.31feet) | 49abbr=onNaNabbr=on | 12 December 2008 | Nikko Ice Bucks | ||
| 17 | F | 1.62m (05.31feet) | 56abbr=onNaNabbr=on | 22 August 2008 | Crystal Blades | ||
| 18 | F | 1.58m (05.18feet) | 59abbr=onNaNabbr=on | 4 April 2006 | Daishin | ||
| 19 | F | 1.59m (05.22feet) | 60abbr=onNaNabbr=on | 8 October 2006 |  OHA Tardiff | ||
| 20 | F | 1.49m (04.89feet) | 45abbr=onNaNabbr=on | 3 March 2008 | Seibu Princess Rabbits | ||
| 21 | F | 1.56m (05.12feet) | 46abbr=onNaNabbr=on | 8 April 2009 | DK Peregrine | ||
| 30 | G | 1.65m (05.41feet) | 80abbr=onNaNabbr=on | 23 May 2006 | Chunichi Club |