The 2021 Phillip Island Trophy is a tournament on the 2021 WTA Tour, one of six events in the 2021 Melbourne Summer Series. It was played on outdoor hard courts in Melbourne, Australia. It was organised as a lead-up tournament to the 2021 Australian Open, and was held at the same venue, due to other tournaments in Australia being cancelled as a result from the COVID-19 pandemic. This tournament took place simultaneously with the second week of the 2021 Australian Open.[1]
See main article: 2021 Phillip Island Trophy – Singles.
Daria Kasatkina def. 
Marie Bouzková 4–6, 6–2, 6–2See main article: 2021 Phillip Island Trophy – Doubles.
Ankita Raina / Kamilla Rakhimova def. Anna Blinkova / Anastasia Potapova 2–6, 6–4, [10–7]| Event | W | F | SF | QF | Round of 16 | Round of 32 | Round of 64 | Q | Q1 |
| Singles | 280 | 180 | 110 | 60 | 30 | 16 | 1 | 12 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Round of 64 | Q1 | |
| Singles | $28,500 | $20,850 | $11,100 | $5,250 | $2,700 | $1,900 | $1,400 | $1,211 | |
| $8,000 | $5,000 | $3,000 | $1,500 | $1,300 | $1,000 |
| Country | Player | Ranka | Seed | |
|---|---|---|---|---|
| Sofia Kenin | 4 | 1 | ||
 Canada | Bianca Andreescu | 9 | 2 | |
 United Kingdom | ||||
| Petra Martić | 19 | 4 | ||
 China | Wang Qiang | 34 | 5 | |
| China | ||||
| Russian Federation | Anastasia Pavlyuchenkova | 39 | 7 | |
| Danielle Collins | 40 | 8 | ||
| Sloane Stephens | 41 | 9 | ||
 France | Caroline Garcia | 43 | 10 | |
| China | Zheng Saisai | 44 | 11 | |
 Argentina | Nadia Podoroska | 45 | 12 | |
| Czech Republic | Marie Bouzková | 50 | 13 | |
| Anastasija Sevastova | 53 | 14 | ||
| France | Alizé Cornet | 54 | 15 | |
 Sweden | Rebecca Peterson | 55 | 16 |
The following players received wildcards into the singles main draw:
The following players used a protected ranking to enter the singles main draw:
The following players received entry from the qualifying draw:
Mihaela Buzărnescu
Lizette Cabrera Francesca Jones
Varvara Lepchenko Rebecca Marino Ankita Raina Kamilla RakhimovaThe following players received entry as lucky losers:
Ekaterina Alexandrova → replaced by 
Lesia Tsurenko Amanda Anisimova → replaced by Ajla Tomljanović Catherine Bellis → replaced by Daria Kasatkina
Nao Hibino Jennifer Brady → replaced by Zhu Lin Fiona Ferro → replaced by Lauren Davis Coco Gauff → replaced by 
Danka Kovinić Irina-Camelia Begu Madison Keys → replaced by Anna Blinkova Johanna Konta → replaced by Gabriella Da Silva-Fick Veronika Kudermetova → replaced by 
Zarina Diyas Svetlana Kuznetsova → replaced by Christina McHale
Ons Jabeur → replaced by Madison Brengle
Magda Linette → replaced by Misaki Doi
Elise Mertens → replaced by Katie Boulter Kristina Mladenovic → replaced by 
Aliaksandra Sasnovich
Garbiñe Muguruza → replaced by Ana Bogdan Varvara Gracheva Yulia Putintseva → replaced by Wang Yafan Alison Riske → replaced by Anastasia Potapova Elena Rybakina → replaced by Andrea Petkovic Greet Minnen Barbora Strýcová → replaced by 
Tímea Babos Iga Świątek → replaced by Liudmila Samsonova Maddison Inglis Markéta Vondroušová → replaced by 
Sara Errani Heather Watson → replaced by Elisabetta Cocciaretto Dayana Yastremska → replaced by Sara Sorribes Tormo Zhang Shuai → replaced by Monica Niculescu| Country | Player | Country | Player | Rankb | Seed | |
|---|---|---|---|---|---|---|
| Chan Hao-ching | Latisha Chan | 32 | 1 | |||
| Romania | Monica Niculescu | China | Yang Zhaoxuan | 108 | 2 | |
| Kaitlyn Christian | Sabrina Santamaria | 132 | 3 | |||
| Romania | Andreea Mitu | Romania | Raluca Olaru | 138 | 4 | |
 Georgia | Oksana Kalashnikova | Sweden | Cornelia Lister | 143 | 5 | |
| Belgium | Kirsten Flipkens | Belgium | Greet Minnen | 145 | 6 | |
| Japan | Makoto Ninomiya | China | Wang Yafan | 147 | 7 | |
| Japan | Misaki Doi | Japan | Nao Hibino | 151 | 8 |
The following pair received a wildcard into the doubles main draw: