Women's Japan Basketball League
| Founded | 1998 |
|---|---|
| Country | Japan |
| Confederation | FIBA Asia (Asia) |
| Number of teams | 14 |
| Level on pyramid | 1 |
| Most championships | JX Eneos Sunflowers (21 titles) |
| President | Yuka Harada |
| Website | WJBL |
The Women's Japan Basketball League (Japanese: 一般社団法人バスケットボール女子日本リーグ, romanized: Ippanshadanhōjin Basukettobōru Joshi Nihon Rīgu) is the premier women's basketball league in Japan. From 2024–25 there was a change to a two level league structure, with the “W-League Premier” being the top league, and the “W-League Future” being the lower league. The league is commonly referred to simply as the W League (Wリーグ).