| Challenger Coquimbo | 05/10 16:10 | 25 | [290] Gonzalo Villanueva v Gonzalo Lama [241] | 4-6,6-4,2-6 | |
| Challenger Salvador De Bahia | 05/07 14:00 | 28 | [145] Marcelo Tomas Barrios Vera v Gonzalo Villanueva [330] | 6-7,6-3,6-4 | |
| Challenger Salvador De Bahia | 05/06 13:00 | 27 | [330] Gonzalo Villanueva v Daniel Dutra Da Silva [284] | 6-2,6-4 | |
| Challenger Salvador De Bahia | 05/05 13:00 | 26 | [330] Gonzalo Villanueva v Hernan Casanova [313] | 6-3,6-0 | |
| Challenger Salvador De Bahia | 05/03 17:10 | 25 | [187] Felipe M R Alves v Gonzalo Villanueva [330] | 5-7,4-6 | |
| Challenger Buenos Aires | 04/29 20:00 | 27 | [337] Gonzalo Villanueva v Camilo Ugo Carabelli [175] | 4-6,2-6 | |
| Challenger Buenos Aires | 04/28 14:35 | 26 | [337] Gonzalo Villanueva v Roman A Burruchaga [477] | 7-5,6-1 | |
| Challenger Buenos Aires | 04/26 17:05 | 25 | [257] Joao Menezes v Gonzalo Villanueva [337] | 6-3,4-6,3-6 | |
| ITF M25 Rosario | 04/10 14:00 | 29 | Gonzalo Villanueva v Franco Emanuel Egea | 3-6,6-4,6-1 | |
| ITF M25 Rosario | 04/09 15:00 | 28 | [416] Gonzalo Villanueva v Roman A Burruchaga [470] | 7-5,4-6,6-2 | |
| ITF M25 Rosario | 04/08 14:00 | 27 | [217] Santiago F R Taverna v Gonzalo Villanueva [416] | 6-3,4-6,0-6 | |
| ITF M25 Rosario | 04/07 14:00 | 26 | [455] Juan Ignacio Galarza v Gonzalo Villanueva [416] | 6-7,4-6 | |
| ITF M25 Rosario | 04/06 14:00 | 25 | Nicolas Zanellato v Gonzalo Villanueva | 4-6,4-6 | |
| ITF M25 Rosario | 04/03 14:00 | 29 | [221] Santiago F R Taverna v Gonzalo Villanueva [413] | 4-6,6-3,6-3 | |
| ITF M25 Rosario | 04/02 15:45 | 28 | [413] Gonzalo Villanueva v Oliver Crawford [391] | 7-6,6-0 | |
| ITF M25 Rosario | 04/01 15:45 | 27 | Alejo L L Lavallen v Gonzalo Villanueva | 6-4,3-6,5-7 | |
| ITF M25 Rosario | 03/31 13:00 | 26 | Juan B Otegui v Gonzalo Villanueva | 5-7,2-6 | |
| ITF M25 Rosario | 03/30 15:00 | 25 | Francisco Llanes v Gonzalo Villanueva | 2-6,4-6 | |
| Challenger Santa Cruz | 03/22 19:00 | 25 | [413] Gonzalo Villanueva v Santiago F R Taverna [221] | 5-7,6-7 | |
| Challenger Santa Cruz | 03/21 21:05 | 19 | [395] Gonzalo Villanueva v Nicolas Barrientos [474] | 3-6,6-3,2-6 | |
| Challenger Santa Cruz | 03/20 19:20 | 14 | [395] Gonzalo Villanueva v Ignacio Carou [389] | 6-2,6-4 | |
| Challenger Concepcion | 03/15 16:40 | 25 | [142] Nicolas Jarry v Gonzalo Villanueva [395] | 6-2,6-1 | |
| Challenger Concepcion | 03/14 13:30 | 19 | Nicolas Villalon v Gonzalo Villanueva | 0-6,1-6 | |
| Challenger Concepcion | 03/13 13:30 | 14 | Murkel Dellien v Gonzalo Villanueva | 4-6,1-6 | |
| Challenger Santa Cruz | 01/25 16:00 | 25 | [409] Gonzalo Villanueva v Zdenek Kolar [143] | 5-7,6-4,2-6 | |
| Challenger Santa Cruz | 01/24 19:30 | 19 | Gonzalo Villanueva v Michel Vernier | 6-4,6-4 | |
| Challenger Concepcion | 01/19 15:00 | 26 | [301] Gonzalo Lama v Gonzalo Villanueva [409] | 2-6,6-4,6-4 | |
| Challenger Concepcion | 01/17 20:55 | 25 | [409] Gonzalo Villanueva v Andrej Martin [116] | 6-2,6-3 | |
| Challenger Blumenau | 01/14 17:30 | 27 | [419] Gonzalo Villanueva v Juan Pablo Paz [437] | 3-6,4-6 | |
| Challenger Blumenau | 01/12 14:30 | 26 | [419] Gonzalo Villanueva v Ignacio Carou [418] | 1-6,6-1,6-2 |
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.