| Singles | |
|---|---|
| 2024 Oeiras Indoors | |
| Champion |  Maks Kaśnikowski |
| Runner-up |  Gastão Elias |
| Score | 7–6(7–1), 4–6, 6–3 |
Arthur Fils was the defending champion [1] but chose not to defend his title.
Maks Kaśnikowski won the title after defeating Gastão Elias 7–6(7–1), 4–6, 6–3 in the final.
Henrique Rocha (first round) João Sousa (quarterfinals)
Cem İlkel (second round)
Maxime Janvier (first round, retired)
Adrian Andreev (first round) Valentin Royer (semifinals) Mathias Bourgue (second round)
Michael Geerts (first round)| Semifinals | Final | ||||||||||||
| Q |  Egor Gerasimov | 4 | 6 | 3 | |||||||||
| Gastão Elias | 6 | 3 | 6 | ||||||||||
| Gastão Elias | 61 | 6 | 3 | ||||||||||
| Maks Kaśnikowski | 77 | 4 | 6 | ||||||||||
| 6 | Valentin Royer | 4 | 4 | ||||||||||
| Maks Kaśnikowski | 6 | 6 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | H Rocha | 4 | 4 | ||||||||||||||||||||||||
 T-S Kwiatkowski | 6 | 6 | T-S Kwiatkowski | 6 | 6 | ||||||||||||||||||||||
 L Giustino | 7 | 4 | 6 | L Giustino | 4 | 4 | |||||||||||||||||||||
 M Vrbenský | 5 | 6 | 4 | T-S Kwiatkowski | 77 | 3 | 4 | ||||||||||||||||||||
| WC | Tiago Pereira | 65 | 1 | Q | E Gerasimov | 62 | 6 | 6 | |||||||||||||||||||
| Q | E Gerasimov | 77 | 6 | Q | E Gerasimov | 6 | 2 | 6 | |||||||||||||||||||
| T Kodat | 3 | 1 | 7 | M Bourgue | 4 | 6 | 4 | ||||||||||||||||||||
| 7 | M Bourgue | 6 | 6 | Q | E Gerasimov | 4 | 6 | 3 | |||||||||||||||||||
| 3 | C İlkel | 6 | 3 | 7 | G Elias | 6 | 3 | 6 | |||||||||||||||||||
 S Fanselow | 3 | 6 | 5 | 3 | C İlkel | 4 | 2 | ||||||||||||||||||||
| Q | K de Schepper | 4 | 4 | G Elias | 6 | 6 | |||||||||||||||||||||
| G Elias | 6 | 6 | G Elias | 6 | 3 | 6 | |||||||||||||||||||||
| LL |  Vadym Ursu | 6 | 7 | WC | J Faria | 2 | 6 | 4 | |||||||||||||||||||
| E Quinn | 4 | 5 | LL | V Ursu | 3 | 4 | |||||||||||||||||||||
| WC | J Faria | 78 | 6 | WC | J Faria | 6 | 6 | ||||||||||||||||||||
| 8 | M Geerts | 66 | 2 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | Valentin Royer | 6 | 61 | 6 | |||||||||||||||||||||||
 C Broom | 3 | 77 | 3 | 6 | V Royer | 61 | 6 | 6 | |||||||||||||||||||
| G Debru | 4 | 1 | Q | A Gray | 77 | 1 | 3 | ||||||||||||||||||||
| Q | A Gray | 6 | 6 | 6 | V Royer | 6 | 6 | ||||||||||||||||||||
| Q | J Clarke | 6 | 77 | T Lamasine | 4 | 3 | |||||||||||||||||||||
| Aidan Mayo | 3 | 62 | Q | J Clarke | 6 | 4 | 4 | ||||||||||||||||||||
| T Lamasine | 77 | 0 | T Lamasine | 1 | 6 | 6 | |||||||||||||||||||||
| 4 | M Janvier | 63 | 0r | 6 | V Royer | 4 | 4 | ||||||||||||||||||||
| 5 | A Andreev | 6 | 610 | 3 | M Kaśnikowski | 6 | 6 | ||||||||||||||||||||
| M Kaśnikowski | 3 | 712 | 6 | M Kaśnikowski | 7 | 6 | |||||||||||||||||||||
| Q | N Rubin | 4 | 6 | 5 | WC | J Domingues | 5 | 4 | |||||||||||||||||||
| WC | J Domingues | 6 | 1 | 7 | M Kaśnikowski | 77 | 6 | ||||||||||||||||||||
| PR |  N Álvarez Varona | 5 | 2 | 2 | J Sousa | 61 | 4 | ||||||||||||||||||||
| PR | P Jubb | 7 | 6 | PR | P Jubb | 66 | 4 | ||||||||||||||||||||
| Q | Samuel Vincent Ruggeri | 4 | 2 | 2 | J Sousa | 78 | 6 | ||||||||||||||||||||
| 2 | J Sousa | 6 | 6 | ||||||||||||||||||||||||
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