2024 Engie Open Florianópolis – Men's singles

Tomás Barrios Vera was the defending champion but chose not to defend his title.

Enzo Couacaud won the title after defeating João Lucas Reis da Silva 3–6, 6–4, 7–6(7–1) in the final.

Seeds
• # 🇧🇷 Thiago Monteiro (second round)

• # 🇦🇷 Francisco Comesaña (first round)

• # 🇧🇷 Felipe Meligeni Alves (withdrew)

• # 🇦🇷 Román Andrés Burruchaga (quarterfinals)

• # 🇦🇷 Genaro Alberto Olivieri (second round)

• # 🇫🇷 Geoffrey Blancaneaux (second round)

• # 🇫🇷 Enzo Couacaud (champion)

• # 🇨🇦 Liam Draxl (first round)