2019 Rio Open

The 2019 Rio Open was a professional men's tennis tournament played on outdoor clay courts. It was the sixth edition of the Rio Open, and formed part of the ATP Tour 500 series of the 2019 ATP Tour. It took place in Rio de Janeiro, Brazil between February 18 and 24, 2019.

There was a plan to move the tournament from the clay court surface in Jockey Club Brasileiro to the outdoor hard courts at the Olympic Tennis Centre, which hosted the tennis events of the 2016 Summer Olympics situated in Barra Olympic Park. The intention was to attract more world class players in the tournament such as Novak Djokovic, Roger Federer, and Andy Murray who consistently declined to play the event. Juan Martín del Potro once said to the Rio Open director Luiz Carvalho that he would play Rio Open when the surface changes.

Singles

 * 🇷🇸 Laslo Đere defeated 🇨🇦 Félix Auger-Aliassime, 6–3, 7–5

Doubles

 * 🇦🇷 Máximo González / Nicolás Jarry defeated 🇧🇷 Thomaz Bellucci / 🇧🇷 Rogério Dutra Silva, 6–7(3–7), 6–3, [10–7]

Prize money
1 Qualifiers prize money is also the Round of 32 prize money

Seeds

 * 1 Rankings as of February 11, 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇦 Félix Auger-Aliassime
 * 🇧🇷 Thiago Monteiro
 * 🇧🇷 Thiago Seyboth Wild

The following players received entry from the qualifying draw:
 * 🇧🇴 Hugo Dellien
 * 🇦🇷 Juan Ignacio Londero
 * 🇳🇴 Casper Ruud
 * 🇸🇪 Elias Ymer

The following player received entry as a lucky loser:
 * 🇦🇷 Carlos Berlocq

Withdrawals

 * Before the tournament
 * 🇪🇸 Pablo Andújar → replaced by 🇦🇷 Carlos Berlocq
 * 🇪🇸 Pablo Carreño Busta → replaced by 🇬🇧 Cameron Norrie

Retirements

 * 🇦🇷 Diego Schwartzman
 * Aljaž Bedene

Seeds

 * 1 Rankings as of February 11, 2019.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇧🇷 Thomaz Bellucci / 🇧🇷 Rogério Dutra Silva
 * 🇧🇷 Thiago Monteiro / 🇧🇷 Fernando Romboli

The following pair received entry from the qualifying draw:
 * 🇬🇧 Cameron Norrie / João Sousa

The following pairs received entry as lucky losers:
 * 🇧🇷 Mateus Alves / 🇧🇷 Thiago Seyboth Wild
 * 🇺🇸 Nicholas Monroe / 🇲🇽 Miguel Ángel Reyes-Varela

Withdrawals

 * Before the tournament
 * 🇮🇹 Fabio Fognini
 * 🇦🇷 Diego Schwartzman