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.
<sub>*per team</sub>
<sup>a</sup> Rankings are as of 8 February 2021
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:
The following players received entry as lucky losers:
<sup>b</sup> Rankings are as of 8 February 2021.
The following pair received a wildcard into the doubles main draw: