2024 Oeiras Indoors II – Singles

Maks Kaśnikowski was the defending champion but lost in the second round to Valentin Royer.

Leandro Riedi won the title after defeating Martin Damm 7–6(8–6), 6–2 in the final.

Seeds
• # 🇪🇸 Alejandro Moro Cañas (quarterfinals)

• # Henrique Rocha (first round)

• # João Sousa (quarterfinals)

• # 🇩🇪 Oscar Otte (withdrew)

• # 🇹🇷 Cem İlkel (first round)

• # 🇺🇸 Martin Damm (final)

• # 🇫🇷 Maxime Janvier (first round)

• # Leandro Riedi (champion)