Seattle Storm lead all franchises with 4 recorded titles. Counts below include only championships present in the archive — nothing is estimated.
Titles by franchise
- Seattle Storm — 4 titles
- Minnesota Lynx — 4 titles
- Houston Comets — 4 titles
- Las Vegas Aces — 3 titles
- Los Angeles Sparks — 3 titles
- Phoenix Mercury — 3 titles
- Detroit Shock — 3 titles
- New York Liberty — 1 title
Data: seasons/index.json champions (derived from real playoff results) — every fact above derives from this portal's committed archive; nothing is estimated.