1980 Australian Open – Men's singles

Brian Teacher defeated Kim Warwick in the final, 7–5, 7–6^(7–4), 6–3 to win the men's singles tennis title at the 1980 Australian Open. It was his first and only major singles title. The men's tournament was held from late December to early January 1981 – separately from the women's event, which was already held during late November.

Guillermo Vilas was the two-time defending champion, but lost in the semifinals to Warwick.