| Challenger Lexington | 07/25 17:00 | 14 | [471] Aidan Mchugh v Gonzalo Villanueva [396] | 7-5,2-6,6-3 | |
| Challenger Cary | 07/20 15:00 | 25 | [253] Roberto Cid Subervi v Gonzalo Villanueva [396] | 3-6,7-5,6-1 | |
| UTR Pro Tennis Series Atlanta | 07/16 12:00 | - | Ivan Yatsuk v Gonzalo Villanueva | 6-1,6-4 | |
| UTR Pro Tennis Series Atlanta | 07/15 18:00 | - | William Mroz v Gonzalo Villanueva | 3-6,4-5 | |
| UTR Pro Tennis Series Atlanta | 07/12 13:30 | - | Vazha Shubladze v Gonzalo Villanueva | 6-1,6-2 | |
| UTR Pro Tennis Series Atlanta | 07/10 13:30 | - | Gonzalo Villanueva v Andrew Rogers | 6-2,3-6,4-5 | |
| UTR Pro Tennis Series Atlanta | 07/08 12:00 | - | [399] Gonzalo Villanueva v Jorge Brian Panta [409] | 6-3,6-1 | |
| UTR Pro Tennis Series Atlanta | 07/07 12:00 | - | Samuel Rubell v Gonzalo Villanueva | 4-6,3-6 | |
| UTR Pro Tennis Series Atlanta | 07/06 15:00 | - | Vazha Shubladze v Gonzalo Villanueva | View | |
| UTR Pro Tennis Series Atlanta | 07/05 16:30 | - | Gonzalo Villanueva v Jake Krug | 6-4,5-4 | |
| ITF M15 Weston | 07/04 15:00 | 28 | Gonzalo Villanueva v Liam Draxl | 4-6,6-3,3-6 | |
| ITF M15 Weston | 07/03 14:00 | 27 | Cannon Kingsley v Gonzalo Villanueva | 4-6,7-6,2-6 | |
| ITF M15 Weston | 07/02 19:15 | 26 | Axel Nefve v Gonzalo Villanueva | 6-2,1-6,8-10 | |
| ITF M15 Weston | 07/01 21:10 | - | Kyle Seelig v Gonzalo Villanueva | 6-3,6-7,6-7 | |
| ITF M15 Weston | 07/01 15:25 | 25 | Kyle Seelig v Gonzalo Villanueva | 6-3,6-7,6-7 | |
| ITF M15 Champaign | 06/23 17:15 | 25 | Gonzalo Villanueva v Kweisi Kenyatte | 6-3,6-7,4-6 | |
| ITF M25 Tulsa | 06/17 13:55 | 26 | Gonzalo Villanueva v Gage Brymer | 4-6,3-6 | |
| ITF M25 Tulsa | 06/16 16:30 | 25 | [341] Adrian Andreev v Gonzalo Villanueva [398] | 6-2,3-6,4-6 | |
| Challenger Orlando | 06/06 16:10 | 14 | [342] Adrian Andreev v Gonzalo Villanueva [396] | 3-6,6-3,7-6 | |
| Challenger Little Rock | 05/30 20:10 | 14 | Zachary Svajda v Gonzalo Villanueva | 6-0,5-7,6-2 | |
| Challenger Salinas 2 | 04/29 15:00 | 26 | [404] Gonzalo Villanueva v JC Aragone [320] | 2-6,2-6 | |
| Challenger Salinas 2 | 04/28 16:30 | 25 | [404] Gonzalo Villanueva v Hernan Casanova [394] | 7-5,6-0 | |
| Challenger Salinas 2 | 04/27 14:30 | 19 | [404] Gonzalo Villanueva v David Poljak [464] | 5-7,7-6,7-6 | |
| Challenger Salinas 2 | 04/26 18:50 | 14 | Gonzalo Villanueva v Gonzalo Lama | Retired | |
| Challenger Salinas | 04/19 14:30 | 19 | [402] Gonzalo Villanueva v Nicolas Mejia [465] | 3-6,0-6 | |
| Challenger Salinas | 04/18 15:00 | 14 | Gonzalo Villanueva v Felix Corwin | 6-7,6-4,7-5 | |
| ITF M15 Cordoba | 04/06 12:00 | 62 | Gonzalo Villanueva v Valerio Aboian | 6-7,3-6 | |
| ITF M15 Cordoba | 04/05 14:00 | 62 | Gonzalo Villanueva v Mateo Berne | 6-3,6-1 | |
| ITF M15 Villa Maria | 04/01 15:00 | 26 | Matheus P De Almeida v Gonzalo Villanueva | 6-4,6-3 | |
| ITF M15 Villa Maria | 03/31 13:00 | 25 | Luciano Carraro v Gonzalo Villanueva | 5-7,6-0,4-6 |
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.