| 2026 Rosario Challenger | |
|---|---|
| Date | 2 – 8 February |
| Edition | 2nd |
| Surface | Clay |
| Location | Rosario, Argentina |
| 2025 Champions | |
| Singles | |
 Camilo Ugo Carabelli | |
| Champions | |
| Doubles | |
 Ignacio Carou / Facundo Mena | |
The 2026 Rosario Challenger was a professional tennis tournament played on clay courts. It was the second edition of the tournament, which was part of the 2026 ATP Challenger Tour. It took place in Rosario, Argentina, between 2 and 8 February 2026.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| ARG | Camilo Ugo Carabelli | 49 | 1 |
| ARG | Francisco Comesaña | 68 | 2 |
| ARG | |||
| ARG | Juan Manuel Cerúndolo | 87 | 4 |
| ARG | Román Andrés Burruchaga | 104 | 5 |
 TPE | Tseng Chun-hsin | 122 | 6 |
 BOL | Hugo Dellien | 137 | 7 |
 ITA | Andrea Pellegrino | 138 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Luciano Emanuel Ambrogi Hernán Casanova Juan Estévez Guido Iván Justo Juan Manuel La Serna
Igor Marcondes The following player received entry as a lucky loser:
Ignacio Carou / Facundo Mena def. 
Miguel Ángel Reyes-Varela / Fernando Romboli 6–1, 6–4.