2019 Monte-Carlo Masters – Singles
| Singles | |
|---|---|
| 2019 Monte-Carlo Masters | |
| Champion | Fabio Fognini |
| Runner-up | Dušan Lajović |
| Score | 6−3, 6−4 |
| Draw | 56 (7 Q / 4 WC ) |
| Seeds | 17 |
Fabio Fognini defeated Dušan Lajović in the final, 6–3, 6–4 to win the singles tennis title at the 2019 Monte-Carlo Masters. It was his first ATP Tour Masters 1000 title.
Rafael Nadal was the three-time defending champion, but lost in the semifinals to Fognini.