2025 Libéma Open – Men's singles
| Men's singles | |
|---|---|
| 2025 Libéma Open | |
| Champion | Gabriel Diallo |
| Runner-up | Zizou Bergs |
| Score | 7–5, 7–6(10–8) |
| Draw | 28 (4 Q / 3 WC ) |
| Seeds | 8 |
Gabriel Diallo defeated Zizou Bergs in the final, 7–5, 7–6(10–8) to win the men's singles tennis title at the 2025 Libéma Open. It was his first ATP Tour title, and he saved two match points en route, in the second round against Jordan Thompson.
Alex de Minaur was the reigning champion, but withdrew before the tournament.