2024 Rio Open

The 2024 Rio Open, also known as Rio Open presented by Claro for sponsorship reasons, was a professional men's tennis tournament played on outdoor clay courts. It was the 10th edition of the Rio Open, and part of the ATP Tour 500 tournaments of the 2024 ATP Tour. It took place in Rio de Janeiro, Brazil between February 19–25, 2024.

Singles

 * 🇦🇷 Sebastián Báez def. 🇦🇷 Mariano Navone 6–2, 6–1

Doubles

 * 🇨🇴 Nicolás Barrientos / 🇧🇷 Rafael Matos def. 🇦🇹 Alexander Erler / 🇦🇹 Lucas Miedler 6–4, 6–3

Seeds

 * 1 Rankings are as of 12 February 2024.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇧🇷 João Fonseca
 * 🇧🇷 Gustavo Heide
 * 🇧🇷 Thiago Monteiro

The following players received entry from the qualifying draw:
 * 🇦🇷 Francisco Comesaña
 * 🇧🇷 Felipe Meligeni Alves
 * 🇫🇷 Corentin Moutet
 * 🇦🇷 Mariano Navone

Withdrawals

 * 🇩🇪 Daniel Altmaier → replaced by Cristian Garín
 * Marin Čilić → replaced by 🇨🇴 Daniel Elahi Galán
 * 🇦🇷 Tomás Martín Etcheverry → replaced by 🇧🇴 Hugo Dellien

Seeds

 * 1 Rankings as of 12 February 2024.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇧🇷 Marcelo Demoliner / 🇧🇷 Felipe Meligeni Alves
 * 🇧🇷 Fernando Romboli / 🇧🇷 Thiago Seyboth Wild

The following pair received entry from the qualifying draw:
 * 🇧🇷 João Fonseca / 🇧🇷 Marcelo Zormann

Withdrawals

 * 🇦🇷 Pedro Cachín / 🇦🇷 Tomás Martín Etcheverry → replaced by 🇨🇴 Nicolás Barrientos / 🇧🇷 Rafael Matos