Singles matchups, seeds and recorded results by round. Draw information appears as it is published.
Tomas Machac won the Adelaide International 2026 men's singles title from a draw of 28 players, beating Ugo Humbert 6-4 6(2)-7(7) 6-2 in the final.
7 players are seeded in the Adelaide International 2026 men's singles draw, led by No. 1 seed Alejandro Davidovich Fokina; the No. 8 seed Tomas Machac won the title.
| Seed | Player | Rank | Fate |
|---|---|---|---|
| 1 | Alejandro Davidovich Fokina | #15 | In round of 16 |
| 2 | Tommy Paul | #21 | Semifinals |
| 3 | Francisco Cerundolo | #20 | Round of 16 |
| 4 | Tallon Griekspoor | #25 | Round of 16 |
| 5 | Valentin Vacherot | #32 | In round of 16 |
| 7 | Stefanos Tsitsipas | #33 | Round of 32 |
| 8 | Tomas Machac | #35 | Champion |
All 12 matches in the Round of 32 are complete.
All 6 matches in the Round of 16 are complete.
All 3 matches in the Quarterfinals are complete.
Tomas Machac beat Tommy Paul 2-6 6-3 6-3 in the semifinals.
Tomas Machac beat Ugo Humbert 6-4 6(2)-7(7) 6-2 in the final.