The Great Ocean Road Open was a new addition to the ATP Tour in 2021.

Jannik Sinner won the title, defeating Stefano Travaglia in the final, 7–6(7–4), 6–4.

He saved a match point against Karen Khachanov in the semifinal.

The top eight seeds received a bye into the second round.

Click on the seed number of a player to go to their draw section.