| Event: | Men's singles |
| Games: | 2019 Summer |
| Venue: | Circolo Tennis and Lungomare |
| Dates: | – |
| Competitors: | 71 |
| Nations: | 40 |
| Gold: | Tseng Chun-hsin |
| Goldnoc: | TPE |
| Silver: | Khumoyun Sultanov |
| Silvernoc: | UZB |
| Bronze: | Lucas Poullain |
| Bronzenoc: | FRA |
| Bronze2: | Ivan Gakhov |
| Bronzenoc2: | RUS |
| Prev: | 2017 |
| Next: | 2021 |
| Biannual: | yes |
| Multi: | yes |
| Type: | mixed and team |
See main article: Tennis at the 2019 Summer Universiade.
The men's singles tennis event at the 2019 Summer Universiade was held from 5 to 13 July at the Circolo Tennis and Lungomare in Naples, Italy.
Chinese Taipei's Tseng Chun-hsin won the gold medal, defeating Uzbekistan's Khumoyun Sultanov in the final, 6–7(4–7), 6–3, 6–1.
France's Lucas Poullain and Russia's Ivan Gakhov won the bronze medals.
All seeds receive a bye into the second round.