| Champ: |  Yoshihito Nishioka |
| Runner: |  Pierre-Hugues Herbert |
| Score: | 7–5, 2–6, 6–4 |
| Draw: | 28 (4 / 3) |
| Edition: | 5th |
| Type: | singles doubles |
| After Year: | no |
See main article: article and 2018 ATP Shenzhen Open. David Goffin was the defending champion, but lost in the second round to Andy Murray.
Yoshihito Nishioka won his first ATP title, defeating Pierre-Hugues Herbert in the final, 7–5, 2–6, 6–4.
The top four seeds receive a bye into the second round.