| Champ: |  Tennys Sandgren |
| Runner: |  Cameron Norrie |
| Score: | 6–4, 6–2 |
| Draw: | 28 (4 / 3) |
| Seeds: | 8 |
| Main Name: | ATP Auckland Open |
| Before Name: | ASB Classic |
| After Name: | ASB Classic |
See main article: 2019 ASB Classic.
Roberto Bautista Agut was the defending champion, but withdrew before the tournament began.
Tennys Sandgren won his first title on the ATP Tour, defeating Cameron Norrie in the final, 6–4, 6–2.
The top four seeds received a bye into the second round.