2024 Open de Oeiras II – Singles

Francisco Comesaña was the defending champion but chose not to defend his title.

Jaime Faria won the title after defeating Elias Ymer 3–6, 7–6(7–3), 6–4 in the final.

Seeds
• # 🇺🇸 Alex Michelsen (second round)

• # 🇺🇸 Zachary Svajda (first round)

• # 🇺🇸 Emilio Nava (second round)

• # 🇨🇿 Vít Kopřiva (second round)

• # Lloyd Harris (second round)

• # 🇦🇷 Román Andrés Burruchaga (semifinals)

• # 🇺🇸 Patrick Kypson (second round)

• # 🇯🇵 Shintaro Mochizuki (first round)