| Champ: |  Hubert Hurkacz |
| Runner: |  Pedro Martínez |
| Score: | 6–3, 6–4 |
| Draw: | 28 (4 / 3) |
| Seeds: | 8 |
| Type: | singles doubles |
Hubert Hurkacz defeated Pedro Martínez in the final, 6–3, 6–4 to win the singles tennis title at the 2024 Estoril Open. It was his eighth career ATP Tour singles title, and his first on clay. Hurkacz became the first Polish man to win a main tour title on clay since Wojciech Stuchlik in 1981.
Casper Ruud was the defending champion, but lost in the semifinals to Martínez.[1]
This marked the last professional appearance of four-time ATP Tour titlist and Portuguese player João Sousa.[2] He lost to Arthur Fils in the first round.
The top four seeds received a bye into the second round.