Tomás Martín Etcheverry defeated Alejandro Tabilo in the final, 3–6, 7–6(7–3), 6–4 to win the singles tennis title at the 2026 Rio Open. It was his first ATP Tour title.
Sebastián Báez was the two-time defending champion, but lost in the first round to Jaime Faria.
Seeds
Draw
Finals
Top half
Bottom half
Qualifying Seeds
Qualifiers
Lucky losers
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
External links Main draw Qualifying draw