The Japan women's national under-18 and under-19 basketball team is the national basketball team of Japan and is governed by the Japan Basketball Association.

It represents the country in international under-19 and under-18 (under age 19 and under age 18) women's basketball competitions.

At the 2019 FIBA Under-19 Women's Basketball World Cup, Japan finished 8th out of 16 overall. The team displayed some strong showings including its game against eventual bronze medalist Spain, where Japan won two of the four quarters.

日本 19 歲以下女子籃球隊是代表日本參加國際籃球比賽的 19 歲以下女子籃球隊。該隊由日本籃球協會管理,是國際籃球總會 (FIBA) 的成員。日本 19 歲以下女子籃球隊曾多次參加國際籃球比賽,並取得了不俗的成績。在 2019 年亞洲 19 歲以下女子籃球錦標賽中,日本隊獲得了第四名。在 2021 年國際籃聯 19 歲以下女子籃球世界盃中,日本隊獲得了第九名。