Mats Wilander defeated Ivan Lendl in the final, 6–1, 6–4, 6–4 to win the men's singles tennis title at the 1983 Australian Open.

[1] It was his first Australian Open title and second major singles title overall.

Johan Kriek was the two-time defending champion, but lost in the quarterfinals to Wilander.

[1] The seeded players are listed below.

Mats Wilander is the champion; others show the round in which they were eliminated.