| ITF M15 Pinamar | 03/28 12:30 | 26 | Gonzalo Villanueva v Francisco Comesana | 6-2,6-1 | |
| ITF M15 Pinamar | 03/26 15:50 | 25 | Gonzalo Villanueva v Thiago A Tirante | 7-5,6-3 | |
| ITF M15 Pinamar | 03/22 15:00 | 27 | Gonzalo Villanueva v Francisco Cerundolo | 2-6,6-2,1-6 | |
| ITF M15 Pinamar | 03/21 12:30 | 26 | Gonzalo Villanueva v Mariano Navone | 7-6,6-4 | |
| ITF M15 Pinamar | 03/20 12:30 | 25 | Gonzalo Villanueva v Gaston Tonello | 6-1,6-4 | |
| Challenger - Santiago | 03/06 14:00 | 25 | Gonzalo Villanueva v Federico Gaio | 6-3,3-6,3-6 | |
| Challenger - Santiago | 03/05 14:00 | 24 | Alexandre Muller v Gonzalo Villanueva | 6-4,6-7,1-6 | |
| Challenger - Santiago | 03/04 14:00 | 166 | Gonzalo Villanueva v Amador Salazar | 6-3,6-1 | |
| Challenger - Morelos | 02/19 17:20 | 24 | Manuel Sanchez v Gonzalo Villanueva | 6-3,6-3 | |
| Challenger - Morelos | 02/18 16:00 | 166 | Evan Furness v Gonzalo Villanueva | 6-2,6-7,1-6 | |
| Challenger - Punta del Este | 01/23 14:00 | 25 | Gonzalo Villanueva v Nino Serdarusic | 6-7,6-4,4-6 | |
| Challenger - Punta del Este | 01/21 14:00 | 24 | Thiago Seyboth Wild v Gonzalo Villanueva | 6-1,4-6,3-6 | |
| Challenger - Buenos Aires | 11/13 19:50 | 25 | [379] Gonzalo Villanueva v Hugo Dellien [119] | 4-6,3-6 | |
| Challenger - Buenos Aires | 11/12 14:00 | 54 | Manuel Pena Lopez v Gonzalo Villanueva | 3-6,6-3,1-6 | |
| Challenger - Buenos Aires | 11/11 20:15 | 46 | [454] Pedro Sakamoto v Gonzalo Villanueva [377] | 5-7,6-4,2-6 | |
| Challenger - Montevideo | 11/05 16:00 | 54 | [377] Gonzalo Villanueva v Federico Coria [322] | 5-7,1-6 | |
| Challenger - Montevideo | 11/04 16:30 | 46 | [284] Dragos Dima v Gonzalo Villanueva [377] | 2-6,2-6 | |
| Challenger - Montevideo | 11/03 14:30 | 45 | Nicolas Alvarez v Gonzalo Villanueva | 2-6,0-6 | |
| Challenger - Lima | 10/21 15:00 | 46 | Bastian Malla v Gonzalo Villanueva | 7-5,6-2 | |
| Challenger - Lima | 10/20 16:35 | 45 | [406] Thiago Seyboth Wild v Gonzalo Villanueva [380] | 4-6,6-4,0-6 | |
| ITF Peru F3 | 10/12 16:00 | 27 | Gonzalo Villanueva v Mariano Kestelboim | 5-7,7-6,3-6 | |
| ITF Peru F3 | 10/11 15:00 | 26 | Gonzalo Villanueva v Guido Ivan Justo | 6-0,6-0 | |
| ITF Peru F3 | 10/09 16:40 | 25 | [403] Gonzalo Villanueva v Junior A Ore [383] | 6-3,6-4 | |
| ITF Peru F2 | 10/08 10:00 | 28 | Nicolas Mejia v Gonzalo Villanueva | Walkover | |
| ITF Peru F2 | 10/07 20:30 | 29 | Bastian Malla v Gonzalo Villanueva | 7-6,6-4 | |
| ITF Peru F2 | 10/05 16:50 | 27 | Arklon H D Pino v Gonzalo Villanueva | 1-6,2-6 | |
| ITF Peru F2 | 10/04 17:00 | 26 | Guido Ivan Justo v Gonzalo Villanueva | 4-6,1-6 | |
| ITF Peru F2 | 10/02 18:10 | 25 | Victor Nunez v Gonzalo Villanueva | 2-6,4-6 | |
| ITF Peru F1 | 09/29 16:30 | 29 | Arklon H D Pino v Gonzalo Villanueva | 0-6,3-6 | |
| ITF Peru F1 | 09/28 16:00 | 28 | Gonzalo Villanueva v Connor Huertas del Pino | 6-3,3-6,6-3 |
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.