| Challenger Santa Cruz | 09/12 19:00 | 25 | Gonzalo Villanueva v Jose Pereira | 7-6,6-2 | |
| Challenger Santa Cruz | 09/11 17:30 | 19 | [412] Gonzalo Villanueva v Jorge Panta [303] | 6-2,6-3 | |
| Challenger Santa Cruz | 09/10 16:00 | 14 | [455] Gonzalo Villanueva v Boris Arias [113] | 6-3,7-6 | |
| ITF M15 Buenos Aires | 09/01 12:50 | 27 | Gonzalo Villanueva v Gilbert Klier Junior | 3-6,1-6 | |
| ITF M15 Buenos Aires | 08/31 12:55 | 26 | Gonzalo Villanueva v Vitor Leal | 7-5,6-2 | |
| ITF M15 Buenos Aires | 08/29 13:00 | 25 | Gonzalo Villanueva v Mateo B Reyes | 6-4,7-5 | |
| Challenger Lima | 08/23 17:35 | 26 | Gonzalo Villanueva v Renzo Olivo | 6-0,3-6,4-6 | |
| Challenger Lima | 08/22 17:45 | 25 | Gonzalo Villanueva v Juan C P Angelo | 6-3,1-6,7-5 | |
| ITF M25 Trujillo | 08/17 15:00 | 26 | Gonzalo Villanueva v Ignacio Carou | 5-7,2-6 | |
| ITF M25 Trujillo | 08/15 14:00 | 25 | Gonzalo Villanueva v Fermin Tenti | 6-3,6-1 | |
| Challenger Cordenons | 08/08 13:45 | 25 | Federico Agustin Gomez v Gonzalo Villanueva | 2-6,6-3,7-6 | |
| Challenger Cordenons | 08/07 12:05 | 19 | Marcello Serafini v Gonzalo Villanueva | 2-6,1-6 | |
| Challenger Cordenons | 08/06 09:00 | 14 | Benito Massacri v Gonzalo Villanueva | 1-6,2-6 | |
| Challenger San Marino | 07/30 11:00 | 14 | [497] Gonzalo Villanueva v Daniel Dutra Da Silva [383] | 0-6,1-6 | |
| Challenger Verona | 07/24 10:15 | 19 | [497] Gonzalo Villanueva v Stefano Napolitano [312] | 7-6,4-6,4-6 | |
| Challenger Verona | 07/23 14:15 | 14 | [301] Alexander Weis v Gonzalo Villanueva [498] | 6-7,6-3,4-6 | |
| Challenger Trieste | 07/18 12:10 | 25 | [93] Fabian Marozsan v Gonzalo Villanueva [498] | 6-2,7-6 | |
| Challenger Trieste | 07/17 10:10 | 19 | [348] Stefano Napolitano v Gonzalo Villanueva [498] | 6-7,6-2,6-3 | |
| Challenger Trieste | 07/16 12:55 | 14 | [232] Alexandru Jecan v Gonzalo Villanueva [482] | 3-6,6-3,1-6 | |
| Challenger San Benedetto | 07/09 14:30 | 14 | Luca Castagnola v Gonzalo Villanueva | 6-3,7-5 | |
| Challenger Troyes | 07/02 13:30 | 14 | [472] Gonzalo Villanueva v Valerio Aboian [465] | 0-6,4-6 | |
| ITF M15 Bergamo | 06/27 11:15 | 25 | Samuele Pieri v Gonzalo Villanueva | 6-1,6-4 | |
| Challenger Parma | 06/18 13:40 | 14 | [328] Maxime Janvier v Gonzalo Villanueva [455] | 6-3,6-4 | |
| Challenger Perugia | 06/11 08:00 | 45 | [295] Nino Serdarusic v Gonzalo Villanueva [468] | 4-6,7-5,6-3 | |
| ITF M25 Kursumlijska Banja | 06/08 11:05 | 26 | Sebastian Gima v Gonzalo Villanueva | 2-6,6-4,6-1 | |
| ITF M25 Kursumlijska Banja | 06/07 10:05 | 25 | Aleksei Khomich v Gonzalo Villanueva | 5-7,3-6 | |
| ITF M25 Kiseljak | 06/02 10:45 | 27 | [488] Pedro Boscardin Dias v Gonzalo Villanueva [468] | 6-1,6-4 | |
| ITF M25 Kiseljak | 06/01 08:55 | 26 | Samuel Puskar v Gonzalo Villanueva | 3-6,4-6 | |
| ITF M25 Kiseljak | 05/31 11:50 | 25 | Corey Gaal v Gonzalo Villanueva | 5-7,2-6 | |
| Challenger Skopje | 05/21 09:00 | 14 | [464] Gonzalo Villanueva v Mathias Bourgue [392] | 2-6,2-6 |
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.