| 2024 Open de Oeiras | |
|---|---|
| Date | 15–21 April |
| Edition | 10th |
| Surface | Clay |
| Location | Oeiras, Portugal |
| Champions | |
| Singles | |
 Francisco Comesaña | |
| Doubles | |
 Filip Bergevi /  Mick Veldheer | |
The 2024 Open de Oeiras was a professional tennis tournament played on clay courts. It was the tenth edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Oeiras, Portugal between 15 and 21 April 2024.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ITA | Fabio Fognini | 94 | 1 |
 BRA | Thiago Monteiro | 113 | 2 |
 HUN | |||
| ARG | Francisco Comesaña | 116 | 4 |
 USA | Emilio Nava | 125 | 5 |
 FRA | Térence Atmane | 133 | 6 |
| USA | Nicolas Moreno de Alboran | 134 | 7 |
| ARG | Juan Manuel Cerúndolo | 152 | 8 |
| NED | Jesper de Jong | 155 | 9 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as special exempts:
The following players received entry from the qualifying draw:
Adrian Andreev Mathys Erhard
Gauthier Onclin Valentin Royer 
Tseng Chun-hsin Samuel Vincent RuggeriThe following player received entry as a lucky loser:
Francisco Comesaña def. Ugo Blanchet 6–4, 3–6, 7–5. Filip Bergevi / Mick Veldheer def. 
Sergio Martos Gornés / 
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