Francisco Cerúndolo defeated Luciano Darderi in the final, 6–4, 6–2 to win the singles tennis title at the 2026 Argentina Open. It was his first Argentina Open title, having finished runner-up in 2021 and 2025, and fourth ATP Tour title overall.
João Fonseca was the defending champion, but lost in the second round to Alejandro Tabilo.
This was the first time since 2009 that three Argentine players reached the semifinals.
Seeds The top four seeds received a bye into the second round.
Draw
Finals
Top half
Bottom half
Qualifying Seeds
Qualifiers
Lucky loser
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
Notes
References
External links Main draw Qualifying draw