| Challenger Skopje | 05/21 09:00 | 14 | [464] Gonzalo Villanueva v Mathias Bourgue [392] | 2-6,2-6 | |
| Challenger Coquimbo | 05/01 16:55 | 25 | [300] Murkel Dellien v Gonzalo Villanueva [376] | 6-3,6-4 | |
| Challenger Buenos Aires | 04/28 15:35 | 27 | [177] Andrea Collarini v Gonzalo Villanueva [376] | 6-2,6-1 | |
| Challenger Buenos Aires | 04/26 14:30 | 26 | [376] Gonzalo Villanueva v Nick Hardt [220] | 7-5,1-6,7-5 | |
| Challenger Buenos Aires | 04/24 18:05 | 25 | [397] Gonzalo Lama v Gonzalo Villanueva [376] | 6-7,6-7 | |
| Challenger Florianopolis | 04/19 14:40 | 25 | Gonzalo Villanueva v Guido Ivan Justo | 3-6,7-6,2-6 | |
| Challenger Vina del Mar | 03/14 17:25 | 25 | [189] Andrea Pellegrino v Gonzalo Villanueva [304] | 6-0,6-2 | |
| Challenger Vina del Mar | 03/13 14:00 | 19 | [304] Gonzalo Villanueva v Wilson Leite [450] | 3-6,3-6 | |
| Challenger Vina del Mar | 03/12 13:00 | 14 | Gonzalo Villanueva v Bor Artnak | 6-7,6-4,6-2 | |
| Challenger Santiago | 03/07 18:55 | 25 | [304] Gonzalo Villanueva v Hernan Casanova [242] | 0-6,1-6 | |
| Challenger Santiago | 03/06 14:55 | 19 | [304] Gonzalo Villanueva v Federico Gaio [356] | 4-6,4-6 | |
| Challenger Santiago | 03/05 15:35 | 14 | Gonzalo Villanueva v Ignacio A B Otarola | 6-2,6-0 | |
| ATP Acapulco | 02/26 03:45 | 14 | [492] Rubin Statham v Gonzalo Villanueva [313] | 6-3,6-2 | |
| ITF M25 Santo Domingo | 02/24 14:00 | 27 | [389] Kyle Seelig v Gonzalo Villanueva [313] | 6-3,4-6,6-3 | |
| ITF M25 Santo Domingo | 02/23 14:00 | 26 | Preston Brown v Gonzalo Villanueva | Retired | |
| ITF M25 Santo Domingo | 02/21 16:30 | 25 | Nicholas Godsick v Gonzalo Villanueva | 6-3,2-6,3-6 | |
| ITF M25 Santo Domingo | 02/17 15:45 | 27 | [388] Kyle Seelig v Gonzalo Villanueva [310] | 6-2,6-1 | |
| ITF M25 Santo Domingo | 02/16 16:45 | 26 | [258] Ezekiel Clark v Gonzalo Villanueva [310] | 3-6,6-1,2-6 | |
| ITF M25 Santo Domingo | 02/15 15:40 | 25 | Nicholas Godsick v Gonzalo Villanueva | 6-3,4-6,5-7 | |
| Challenger Concepcion | 01/22 18:20 | 14 | [393] Thiago Seyboth Wild v Gonzalo Villanueva [303] | 6-3,7-6 | |
| Challenger Piracicaba | 01/16 13:00 | 19 | [303] Gonzalo Villanueva v Edoardo Lavagno [370] | 4-6,4-6 | |
| Challenger Piracicaba | 01/15 15:05 | 14 | Gonzalo Villanueva v Matheus Bueres | 6-2,6-0 | |
| Challenger Tigre | 01/13 17:50 | 27 | [325] Jesper De Jong v Gonzalo Villanueva [299] | 6-2,7-6 | |
| Challenger Tigre | 01/12 14:00 | 26 | [299] Gonzalo Villanueva v Carlos Sanchez Jover [403] | 6-4,6-2 | |
| Challenger Tigre | 01/10 13:00 | 25 | [299] Gonzalo Villanueva v Evan Zhu [290] | 6-1,2-6,6-2 | |
| Challenger Tigre | 01/07 16:05 | 28 | [327] Murkel Dellien v Gonzalo Villanueva [311] | 6-4,6-0 | |
| Challenger Tigre | 01/06 13:00 | 27 | [311] Gonzalo Villanueva v Valerio Aboian [452] | 7-5,6-7,6-4 | |
| Challenger Tigre | 01/05 15:15 | 26 | [311] Gonzalo Villanueva v Remy Bertola [356] | 6-2,6-3 | |
| Challenger Tigre | 01/04 14:55 | 25 | [268] Oriol Roca Batalla v Gonzalo Villanueva [311] | 2-6,6-2,3-6 | |
| Challenger Temuco | 11/22 19:30 | 25 | Tomas Farjat v Gonzalo Villanueva | 6-3,6-4 |
Gonzalo Villanueva (born 13 January 1995) is an Argentine tennis player.
Villanueva has a career high ATP singles ranking of 268 achieved on 10 October 2022. He also has a career high ATP doubles ranking of 278 achieved on 8 August 2022.
Villanueva made his ATP main draw debut at the 2022 Los Cabos Open after entering the singles main draw as a lucky loser.