2024 São Léo Open

The 2024 São Léo Open was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in São Leopoldo, Brazil between 25 and 31 March 2024.

Seeds

 * 1 Rankings are as of 18 March 2024.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇧🇷 Mateus Alves
 * 🇧🇷 Daniel Dutra da Silva
 * Daniel Vallejo

The following players received entry into the singles main draw as alternates:
 * Bogdan Bobrov
 * 🇧🇷 Orlando Luz
 * 🇪🇸 Carlos Sánchez Jover

The following players received entry from the qualifying draw:
 * 🇮🇱 Daniel Cukierman
 * 🇪🇨 Emilio Gómez
 * 🇺🇸 Bruno Kuzuhara
 * 🇦🇷 Lorenzo Joaquín Rodríguez
 * 🇦🇷 Juan Bautista Torres
 * 🇯🇵 Kaichi Uchida

The following player received entry as a lucky loser:
 * 🇦🇷 Gonzalo Villanueva

Singles

 * Daniel Vallejo def. 🇫🇷 Enzo Couacaud 6–3, 6–2.

Doubles

 * 🇧🇷 Marcelo Demoliner / 🇧🇷 Orlando Luz def. 🇨🇦 Liam Draxl / 🇮🇹 Alexander Weis 7–5, 3–6, [10–8].