Rafael Nadal beat Daniil Medvedev to lift his 21st Grand Slam title at the Australian Open last year, while Ash Barty won the women's singles final to end Australia's 44-year wait for a home singles winner at the tournament.
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Barbora Krejcikova and Katerina Siniakova won their fourth women's doubles crown and the Australian pairing of Nick Kyrgios and Thanasi Kokkinakis became the first wildcard team to win the Australian Open men's doubles title in the professional era.
Here is what you need to know about the finals of the year's first Grand Slam:
WHEN IS THE AUSTRALIAN OPEN HAPPENING?
* The 2023 Australian Open runs from 16-29 January.
WHERE IS THE AUSTRALIAN OPEN TAKING PLACE?
* The Australian Open is held in Melbourne every year.
* The three main showcourts at Melbourne Park are Rod Laver Arena, Margaret Court Arena and John Cain Arena.
WHEN IS THE WOMEN'S SINGLES FINAL?
* Wimbledon champion Elena Rybakina will take on Aryna Sabalenka of Belarus in the women's singles final on Saturday, 28 January at Rod Laver Arena. The finalists will be on court shortly after 8:30am GMT (7:30 pm local time).
* Barty beat American Danielle Collins 6-3 7-6(2) in the final of the 2022 tournament.
* Barty, a three-times Grand Slam winner, did not defend her title in Melbourne after announcing her retirement from tennis last year at age 25.
WHEN IS THE MEN'S SINGLES FINAL?
* The men's singles final will be held on Sunday, 29 January at Rod Laver Arena. The finalists will be on the court shortly after 8:30am GMT (7:30 pm local time).
* Spaniard Nadal fought back from two sets down to beat Russian Medvedev 2-6 6-7(5) 6-4 6-4 7-5 in last year's final.
* Nadal's Australian Open title defence ended in a second- round defeat by Mackenzie McDonald.
WHEN IS THE WOMEN'S DOUBLES FINAL?
* The women's doubles final will be held on Sunday, 29 January.
* Krejcikova and Siniakova added the Australian Open's women's doubles title to their resume last year with a 6-7(3) 6-4 6-4 win over Anna Danilina and Beatriz Haddad Maia.
* The Czech duo also won the US Open and Wimbledon women's doubles titles last year to complete a career 'Golden Slam'. They have won six women's doubles Grand Slam titles as a pair, as well as a gold medal at the Tokyo Games.
WHEN IS THE MEN'S DOUBLES FINAL?
* The men's doubles final will be held on Saturday, 28 January.
* The Australian pairing of Jason Kubler and Rinky Hijikata will face France's Hugo Nys and Jan Zielinski of Poland.
* Kyrgios and Kokkinakis defeated compatriots Max Purcell and Matt Ebden in the men's doubles final last year.
* The duo, nicknamed the "Special Ks" as juniors, were set to defend their title at this year's tournament, but Kyrgios was forced to pull out of the tournament with a knee injury.
WHEN IS THE MIXED DOUBLES FINAL?
* The mixed doubles final will be held on Friday, 27 January.
* India's Sania Mirza and Rohan Bopanna will face Brazilians Luisa Stefani and Rafael Matos.
* France's Kristina Mladenovic and Croatian Ivan Dodig swept to a 6-3 6-4 victory over local duo Jaimee Fourlis and Jason Kubler to claim the Australian Open mixed doubles crown last year.