| 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 | |
| Challenger Sao Leopoldo | 11/15 16:30 | 25 | [292] Gonzalo Villanueva v Facundo D Acosta [184] | 3-6,3-6 | |
| Challenger Montevideo | 11/08 20:45 | 25 | [283] Gonzalo Villanueva v Juan Pablo Paz [409] | 4-6,6-7 | |
| Challenger Montevideo | 11/07 18:40 | 19 | [283] Gonzalo Villanueva v Federico Zeballos [146] | 3-6,4-6 | |
| Challenger Montevideo | 11/06 20:00 | 14 | Gonzalo Villanueva v Dario Acosta | 7-6,6-3 | |
| Challenger Lima | 10/23 17:15 | 14 | Gonzalo Villanueva v Alvaro G Meza | Walkover | |
| Challenger Coquimbo | 10/18 13:00 | 25 | [156] Juan M Cerundolo v Gonzalo Villanueva [269] | 6-4,6-3 | |
| Challenger Rio De Janeiro | 10/11 14:40 | 25 | [117] Marco Cecchinato v Gonzalo Villanueva [268] | 6-4,6-2 | |
| Challenger Campinas | 10/05 13:30 | 26 | [272] Gonzalo Villanueva v Facundo Mena [157] | 4-6,7-5,2-6 | |
| Challenger Campinas | 10/04 13:00 | 25 | [272] Gonzalo Villanueva v Jose Pereira [418] | 0-6,6-4,6-3 |
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.