Most losses by a WNBA team in a season
- Who
- Phoenix Mercury, Indiana Fever, Tulsa Shock
- What
- 31 total number
- Where
- Not Applicable
- When
- 2023
The Women's National Basketball Association (WNBA) record for most losses by a team in a single season is 31. This mark has been reached three times, first by the Tulsa Shock in 2011, then by the Indiana Fever in 2022, and most recently, by the Phoenix Mercury (all USA) in 2023.
The second most losses by a team in a single WNBA season is 30, obtained by the Atlanta Dream (USA) in 2008.