Most assists in a WNBA postseason game
- Who
- Courtney Vandersloot
- What
- 18 total number
- Where
- Not Applicable
- When
- 28 September 2021
The most assists in a WNBA postseason game is 18 by Courtney Vandersloot (USA) while playing for the Chicago Sky during a Game One 101-95 semifinals win over the Connecticut Sun (both USA) on 28 September 2021.