2019 Australian Open – Wheelchair women's singles
# 2019 Australian Open – Wheelchair women's singles

Defending champion Diede de Groot defeated Yui Kamiji in the final, 6–0, 6–2 to win the women's singles wheelchair tennis title at the 2019 Australian Open. It was her third step towards a non-calendar-year Grand Slam.

## Seeds

* Diede de Groot (champion)
* Yui Kamiji (final)

## Draw

### Key

* 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

### Draw

| First round | First round | First round | First round | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | Diede de Groot | 6 | 6 | | | | | | | | |
| | Lucy Shuker | 0 | 0 | | | | | | | | |
| | Lucy Shuker | 0 | 0 | 1 | Diede de Groot | 6 | 6 | | | | |
| | | | | | Marjolein Buis | 3 | 2 | | | | |
| | Marjolein Buis | 6 | 6 | | Marjolein Buis | 3 | 2 | | | | |
| | Sabine Ellerbrock | 1 | 4 | | | | | | | | |
| | Sabine Ellerbrock | 1 | 4 | | | | | 1 | Diede de Groot | 6 | 6 |
| | | | | | | | | 2 | Yui Kamiji | 0 | 2 |
| | Aniek van Koot | 6 | 7 | | | | | | | | | 2 | Yui Kamiji | 0 | 2 |
| | Kgothatso Montjane | 1 | 5 | | | | | | | | |
| | Kgothatso Montjane | 1 | 5 | | Aniek van Koot | 1 | 4 | | | | |
| | | | | 2 | Yui Kamiji | 6 | 6 | | | | |
| | Giulia Capocci | $6^3$ | 3 | 2 | Yui Kamiji | 6 | 6 | | | | |
| 2 | Yui Kamiji | $7^7$ | 6 | | | | | | | | |
