# 2021 Phillip Island Trophy – Doubles

The Phillip Island Trophy was a new addition to the WTA Tour in 2021.
Ankita Raina and Kamilla Rakhimova won the title, defeating Anna Blinkova and Anastasia Potapova in the final, 2–6, 6–4, [10–7].

## Seeds

* Chan Hao-ching / Latisha Chan (quarterfinals)
* Monica Niculescu / Yang Zhaoxuan (second round)
* Kaitlyn Christian / Sabrina Santamaria (second round)
* Andreea Mitu / Raluca Olaru (second round)
* Oksana Kalashnikova / Cornelia Lister (second round)
* Kirsten Flipkens / Greet Minnen (second round)
* Makoto Ninomiya / Wang Yafan (semifinals)
* Misaki Doi / Nao Hibino (first round, withdrew)

## 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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 7 | Makoto Ninomiya Wang Yafan | 4 | 3 | | | | | |
| | Anna Blinkova Anastasia Potapova | 6 | 6 | | | | | |
| | Anna Blinkova Anastasia Potapova | 6 | 6 | | Anna Blinkova Anastasia Potapova | 6 | 4 | [7] |
| | | | | | Ankita Raina Kamilla Rakhimova | 2 | 6 | [10] |
| | Ankita Raina Kamilla Rakhimova | 4 | 6 | [11] | Ankita Raina Kamilla Rakhimova | 2 | 6 | [10] |
| | Francesca Jones Nadia Podoroska | 6 | 4 | [9] | | | | |

### Top half

| First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | 1 | H-c Chan L Chan | 7$^7$ | 6 | | | | | | | | |
| C McHale V Savinykh | 6 | 6 | | C McHale V Savinykh | 6$^5$ | 4 | | | | | | | | |
| Y Sizikova R Voráčová | 3 | 2 | | | | | 1 | H-c Chan L Chan | 3 | 6$^6$ | | | | |
| M Bouzková S Sorribes Tormo | | | | | | | 7 | M Ninomiya Y Wang | 6 | 7$^8$ | | | | |
| K Birrell O Gadecki | w/o | | | K Birrell O Gadecki | | | | | | | | | | |
| | | | 7 | M Ninomiya Y Wang | w/o | | | | | | | | | |
| | | | | | | | | | | | 7 | M Ninomiya Y Wang | 4 | 3 |
| | | | | | | | | | | | | A Blinkova A Potapova | 6 | 6 |
| | | | 4 | A Mitu R Olaru | 6$^8$ | 6$^3$ | | | | | | | | |
| A Blinkova A Potapova | 6 | 6 | | A Blinkova A Potapova | 7$^{10}$ | 7$^7$ | | | | | | | | |
| L Cabrera M Inglis | 1 | 1 | | | | | | A Blinkova A Potapova | 6 | 7 | | | | |
| M Brengle L Davis | 4 | 0 | | | | | | K Bondarenko N Kichenok | 2 | 5 | | | | |
| K Bondarenko N Kichenok | 6 | 6 | | K Bondarenko N Kichenok | 7 | 7 | | | | | | | | |
| | | | 6 | K Flipkens G Minnen | 5 | 5 | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | 5 | O Kalashnikova C Lister | 3 | 4 | | | | | | | | |
| | M Buzărnescu PM Țig | 1 | 6$^3$ | | A Raina K Rakhimova | 6 | 6 | | | | | | | | |
| | A Raina K Rakhimova | 6 | 7$^7$ | | | | | | A Raina K Rakhimova | 6 | 7$^7$ | | | | |
| | V Lapko A Sasnovich | 6 | 6 | | | | | | V Lapko A Sasnovich | 4 | 6$^2$ | | | | |
| WC | D Aiava C Kempenaers-Pocz | 0 | 4 | | V Lapko A Sasnovich | 6 | 6 | | | | | | | | |
| | | | | 3 | K Christian S Santamaria | 4 | 3 | | | | | | | | |
| | | | | | | | | | | | | A Raina K Rakhimova | 4 | 6 | [11] |
| 8 | M Doi N Hibino | | | | | | | | | | | F Jones N Podoroska | 6 | 4 | [9] |
| | G Da Silva-Fick P Yadlapalli | w/o | | | G Da Silva-Fick P Yadlapalli | 3 | 6 | [6] | | | | | | | |
| | A Osborne A Sharma | 2 | 4 | | P Martić A Sevastova | 6 | 2 | [10] | | | | | | | |
| | P Martić A Sevastova | 6 | 6 | | | | | | P Martić A Sevastova | 3 | 2 | | | | |
| | F Jones N Podoroska | 6 | 6 | | | | | | F Jones N Podoroska | 6 | 6 | | | | |
| | E Cocciaretto A Muhammad | 4 | 3 | | F Jones N Podoroska | 6 | 4 | [10] | | | | | | | |
| | | | | 2 | M Niculescu Z Yang | 4 | 6 | [8] | | | | | | | |