| Challenger Temuco | 11/26 15:20 | 26 | [217] Juan Carlos Prado Angelo v Gonzalo Villanueva [346] | 6-4,4-6,7-5 | |
| Challenger Temuco | 11/25 16:05 | 25 | [297] Matheus Pucinelli De Almeida v Gonzalo Villanueva [346] | 4-6,2-6 | |
| Challenger Florianopolis | 11/20 14:00 | 26 | [346] Gonzalo Villanueva v Nicolas Kicker [259] | 2-6,3-6 | |
| Challenger Florianopolis | 11/19 13:00 | 25 | Nicolas Zanellato v Gonzalo Villanueva | 6-3,3-6,2-6 | |
| Challenger Montevideo | 11/10 17:35 | 19 | [414] Joaquin Aguillar Cardozo v Gonzalo Villanueva [345] | 6-3,4-6,7-6 | |
| Challenger Montevideo | 11/09 17:40 | 14 | Johannes Ingildsen v Gonzalo Villanueva | Walkover | |
| Challenger Lima 2 | 11/06 17:55 | 26 |
[344] Gonzalo Villanueva v
Genaro Alberto Olivieri
[228]
|
4-6,7-5,3-6 | |
| Challenger Lima 2 | 11/05 15:00 | 25 |
[344] Gonzalo Villanueva v
Rodrigo Pacheco Mendez
[202]
|
6-3,6-4 | |
| Challenger Lima 2 | 11/03 17:40 | 19 |
[449] Polonia Bytom
v
Gonzalo Villanueva [344] |
5-7,0-6 | |
| Challenger Lima 2 | 11/02 19:05 | 14 | [448] Luciano Emanuel Ambrogi v Gonzalo Villanueva [352] | 6-3,6-7,2-6 | |
| Challenger Lima | 10/29 17:00 | 26 | [352] Gonzalo Villanueva v Alex Barrena [172] | 4-6,2-6 | |
| Challenger Lima | 10/27 20:15 | 25 |
[238] Timofey Skatov
v
Gonzalo Villanueva [352] |
3-6,1-6 |
Gonzalo Villanueva (born 13 January 1995) is an Argentine professional tennis player. He has a career-high ATP singles ranking of No. 268 achieved on 10 October 2022 and a best doubles ranking of No. 164 achieved on 1 December 2025.
Villanueva made his ATP main draw debut at the 2022 Los Cabos Open after entering the singles main draw as a lucky loser losing to Rinky Hijikata in qualifying. He won his maiden ATP Challenger title at the 2024 Challenger Tucumán in doubles partnering Luís Britto.