Tennis Australia is making contingencies in case the 2021 Australian Open can't go ahead as normal in Melbourne in January.

CEO Craig Tiley said they were preparing for the possibility that international players will have to undergo quarantine, or for the tournament to go ahead without fans in the stadiums.

“There is just so much uncertainty as to what is going to happen in the next month let alone the next eight months," Tiley said in a statement on Tuesday.

“These extraordinary times dictate a need for agility and extensive planning that explores a very wide range of options.