Three-time defending champion Esther Vergeer defeated Korie Homan in the final, 6–0, 6–0 to win the women's singles wheelchair tennis title at the 2009 US Open.
| Wheelchair women's singles | |
|---|---|
| 2009 US Open | |
| Champion |  Esther Vergeer |
| Runner-up | Korie Homan |
| Score | 6–0, 6–0 |
The event was not held in 2008 due to a schedule conflict with the 2008 Summer Paralympics, an issue that would continue to affect US Open wheelchair tennis until 2021.
Seeds edit
Esther Vergeer (champion)- Korie Homan (final)
Draw edit
Key edit
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- SE = Special exempt
- PR = Protected ranking
- ITF = ITF entry
- JE = Junior exempt
- w/o = Walkover
- r = Retired
- d = Defaulted
- SR = Special ranking
Finals edit
| Quarterfinals | Semifinals | Finals | ||||||||||||||||||
| 1 | Esther Vergeer
| 6 | 7 | |||||||||||||||||
 Florence Gravellier
| 2 | 5 | ||||||||||||||||||
| 1 | Esther Vergeer
| 6 | 6 | |||||||||||||||||
| Aniek van Koot
| 0 | 1 | ||||||||||||||||||
| Jiske Griffioen
| 4 | 3 | ||||||||||||||||||
| Aniek van Koot
| 6 | 6 | ||||||||||||||||||
| 1 | Esther Vergeer
| 6 | 6 | |||||||||||||||||
| 2 | Korie Homan
| 0 | 0 | |||||||||||||||||
| WC |  Emmy Kaiser
| 4 | 3 | |||||||||||||||||
| Sharon Walraven
| 6 | 6 | ||||||||||||||||||
| Sharon Walraven
| 4 | 0r | ||||||||||||||||||
| 2 | Korie Homan
| 6 | 0 | |||||||||||||||||
 Daniela Di Toro
| 2 | 62 | ||||||||||||||||||
| 2 | Korie Homan
| 6 | 7 | |||||||||||||||||