The 2018 Brasil Open was a tennis tournament played on indoor clay courts. It was the 18th edition of the Brasil Open, and part of the ATP World Tour 250 series of the 2018 ATP World Tour. It took place from February 26 through March 4, 2018, in São Paulo, Brazil.
Singles main-draw entrants
Seeds
1 Rankings as of February 19, 2018.
Other entrants
The following players received wildcards into the singles main draw: Thiago Monteiro Corentin Moutet Thiago Seyboth Wild
The following players received entry from the qualifying draw: Guilherme Clezar João Domingues Sebastian Ofner Renzo Olivo
Withdrawals
Before the tournament
Cedrik-Marcel Stebe → replaced by Gastão Elias
Jiří Veselý → replaced by Carlos Berlocq
Doubles main-draw entrants
Seeds
1 Rankings as of February 19, 2018.
Other entrants
The following pairs received wildcards into the doubles main draw: Thomaz Bellucci / André Sá Dorian Descloix / Gaël Monfils
The following pairs received entry as alternates: Pedro Bernardi / Thiago Monteiro Fabrício Neis / Renzo Olivo
Withdrawals
Before the tournament
Nicolás Jarry
Gerald Melzer
During the tournament
Pablo Cuevas
Retirements
Fabrício Neis
Champions
Singles
Fabio Fognini def. Nicolás Jarry, 1–6, 6–1, 6–4
Doubles
Federico Delbonis / Máximo González def. Wesley Koolhof / Artem Sitak, 6–4, 6–2.