Two-time Australian Open champion Rafael Nadal has been included on the entry list after nearly a year out with injury, while Nick Kyrgios looks set to miss the tournament in January.
Nadal, 37, has been out of action since injuring his hip flexor at the last Australian Open.
The former world number one recently confirmed he would make his return at January’s Brisbane International.
Australian Kyrgios has had an injury-blighted 2023, missing all four majors.
The 28-year-old, a Wimbledon finalist in 2022, has struggled with wrist, knee and foot injuries and said last month “the stars would need to align” for him to be fit for the first major of the year. In theory, he could still be awarded a wildcard.
Defending champion and world number one Novak Djokovic will return as he bids for a record-extending 11th men’s Australian Open title and a 25th Grand Slam win overall.
Long-time rival Nadal, who has won 22 majors, said in May that 2024 would “probably” be his last year on tour.
The Australian Open starts on 14 January and ends with the men’s singles final on 28 January.