Ash Barty has claimed the year-end world No.1 singles ranking for the third year in a row.
Only Chris Evert, Martina Navratilova, Steffi Graf and Serena Williams have previously achieved this accomplishment in WTA Tour history, placing the Wimbledon 2021 champion in elite company.
The 25-year-old Australian, who won a tour-leading five titles during 2021, held the top ranking throughout the season and was formally recognised as the year-end No.1 in this week's rankings.
Ajla Tomljanovic, Australia's No.2-ranked woman, ends her impressive season at world No.45. It is the second time the 28-year-old has finished a season inside the top 50, having also achieved the feat in 2018. A first Grand Slam quarterfinal at Wimbledon was Tomljanovic's season highlight.
Astra Sharma has recorded her first top-100 finish, ending the year at world No.96. The athletic 26-year-old rose 32 spots from her 2020 mark, boosting by claiming a first WTA singles title at Charleston in April.
Storm Sanders improved 153 positions this season, ending her career-best year at world No.129, while Ellen Perez recorded her highest finish to a season in three years, improving 41 positions to No.193.
> VOTE NOW: Storm Sanders is nominated for the Billie Jean King Cup Heart Award
Seone Mendez rose 63 spots in 2021, with the 22-year-old recording her best-ever year-end ranking at world No.212.
Olivia Gadecki was the biggest mover of the year. After starting the season unranked, the 19-year-old ended an exceptional debut season at world No.230 and inside the Australian top 10.
| Women's singlesAustralian top 20 | ||||
| Player | Age | Year-end ranking | Ranking points | |
| 1 | Ash Barty | 25 | No.1 | 7582 |
| 2 | Ajla Tomljanovic | 28 | No.45 | 1395 |
| 3 | Astra Sharma | 26 | No.96 | 806 |
| 4 | Storm Sanders | 27 | No.129 | 581 |
| 5 | Maddison Inglis | 23 | No.136 | 549 |
| 6 | Arina Rodionova | 31 | No.152 | 478 |
| 7 | Lizette Cabrera | 23 | No.172 | 409 |
| 8 | Ellen Perez | 26 | No.193 | 348 |
| 9 | Seone Mendez | 22 | No.212 | 322 |
| 10 | Olivia Gadecki | 19 | No.230 | 301 |
| 11 | Priscilla Hon | 23 | No.256 | 266 |
| 12 | Destanee Aiava | 21 | No.310 | 208 |
| 13 | Jaimee Fourlis | 22 | No.323 | 196 |
| 14 | Sam Stosur | 37 | No.378 | 153 |
| 15 | Daria Gavrilova | 27 | No.419 | 126 |
| 16 | Alexandra Bozovic | 22 | No.450 | 111 |
| 17 | Abbie Myers | 27 | No.451 | 111 |
| 18 | Ivana Popovic | 21 | No.454 | 110 |
| 19 | Olivia Tjandramulia | 24 | No.518 | 88 |
| 20 | Olivia Rogowska | 30 | No.537 | 84 |
> VIEW: Full year-end WTA Tour singles rankings
> READ: Sam Stosur finishes 2021 as top-ranked Australian woman in doubles