| ITF M15 Villa Maria | 03/31 13:00 | 25 | Luciano Carraro v Gonzalo Villanueva | 5-7,6-0,4-6 | |
| Challenger Santiago | 03/17 14:00 | 26 | [253] Sebastian Baez v Gonzalo Villanueva [420] | 7-5,6-2 | |
| Challenger Santiago | 03/16 13:00 | 25 | [214] Andrea Collarini v Gonzalo Villanueva [420] | 4-6,4-6 | |
| Challenger Santiago | 03/15 13:00 | 19 | [358] Carlos Gomez-Herrera v Gonzalo Villanueva [420] | 4-6,3-6 | |
| Challenger Santiago | 03/14 14:00 | 14 | Daniel Antonio Nunez v Gonzalo Villanueva | 6-3,3-6,6-7 | |
| ITF M25 Naples | 02/27 16:00 | 28 | [419] Gonzalo Villanueva v Corentin Denolly [337] | 6-7,2-6 | |
| ITF M25 Naples | 02/26 16:00 | 27 | [425] Martin Damm v Gonzalo Villanueva [419] | 7-5,6-7,6-7 | |
| ITF M25 Naples | 02/25 14:50 | 26 | [381] Michael Redlicki v Gonzalo Villanueva [419] | 5-7,6-3,0-6 | |
| ITF M25 Naples | 02/24 16:50 | 25 | [419] Gonzalo Villanueva v Darian King [296] | 6-3,6-0 | |
| ITF M25 Naples | 02/17 20:50 | 25 | [414] Gonzalo Villanueva v Stefan Kozlov [376] | 3-6,2-6 | |
| ITF M25 Hurlingham | 03/05 13:00 | 26 | Gonzalo Villanueva v Nicolas Alberto Arreche | 4-6,5-7 | |
| ITF M25 Hurlingham | 03/04 13:00 | 25 | Gonzalo Villanueva v Jose Pereira | 6-4,6-1 | |
| ITF M25 Rio Cuarto | 02/25 18:30 | 25 | [469] Facundo D Acosta v Gonzalo Villanueva [386] | 6-2,7-5 | |
| ITF M25 Punta del Este | 02/20 13:00 | 27 | Santiago F R Taverna v Gonzalo Villanueva | 3-6,6-1,6-4 | |
| ITF M25 Punta del Este | 02/19 16:25 | 26 | [487] Mariano Kestelboim v Gonzalo Villanueva [386] | 1-6,7-6,2-6 | |
| ITF M25 Punta del Este | 02/18 19:35 | 25 | Agustin Riquelme Coppari v Gonzalo Villanueva | 1-6,1-6 | |
| ITF M25 Lima | 02/14 17:25 | 27 | [292] Pedro Sakamoto v Gonzalo Villanueva [386] | 6-3,6-4 | |
| ITF M25 Lima | 02/13 14:30 | 26 | [494] Martin Cuevas v Gonzalo Villanueva [386] | Retired | |
| ITF M25 Lima | 02/11 17:00 | 25 | Gonzalo Bueno v Gonzalo Villanueva | 2-6,1-6 | |
| ITF M25 Lima | 02/05 14:30 | 25 | [347] Marcelo Tomas Barrios Vera v Gonzalo Villanueva [387] | 6-3,6-3 | |
| Challenger Punta del Este | 01/29 22:00 | 25 | Marco Cecchinato v Gonzalo Villanueva | 6-0,6-3 | |
| Challenger Punta del Este | 01/28 00:10 | 24 | Gonzalo Villanueva v Juan Martin Fumeaux | 6-2,6-0 | |
| ITF M25 Naples | 11/19 19:00 | 25 | [401] Gonzalo Villanueva v Roberto Cid Subervi [260] | 6-4,0-6,3-6 | |
| Challenger Houston | 11/14 00:35 | 25 | [411] Gonzalo Villanueva v Jenson Brooksby [274] | 2-6,2-6 | |
| Challenger Houston | 11/12 22:25 | 24 | [466] Rafael Matos v Gonzalo Villanueva [411] | 6-7,4-6 | |
| Challenger Montevideo | 11/04 19:20 | 24 | [408] Gonzalo Villanueva v Rafael Matos [469] | 6-4,0-6,2-6 | |
| Challenger Guayaquil | 10/29 16:00 | 25 | [406] Gonzalo Villanueva v Pedro Sousa [127] | 2-6,2-6 | |
| Challenger Guayaquil | 10/28 20:10 | 24 | Gonzalo Villanueva v Antonio Cayetano March | 6-4,6-3 | |
| Challenger Lima | 10/21 19:50 | 24 | [231] Pedja Krstin v Gonzalo Villanueva [409] | 6-3,6-0 | |
| Challenger Santo Domingo | 10/08 23:00 | 25 | [401] Gonzalo Villanueva v Hugo Dellien [83] | 2-6,3-6 |
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.