| ITF - Israel F16 | 11/22 10:00 | 62 | Nicolas Alvarez Varona v Philip Sikman | 7-6,3-6,5-7 | |
| ITF - Espanha F29 - Qualificação | 09/12 14:00 | 62 | Nicolas Alvarez Varona v Sergio Barranco | Retired | |
| ITF - Espanha F28 | 09/09 09:00 | 26 | Oriol Roca Batalla v Nicolas Alvarez Varona | 6-0,6-2 | |
| ITF - Espanha F28 | 09/07 08:30 | 25 | Jorge L-Perez Fuster v Nicolas Alvarez Varona | 6-3,1-6,3-6 |
Nicolás Álvarez Varona (born 18 May 2001) is a Spanish tennis player.
Álvarez Varona has a career high ATP singles ranking of World No. 219 achieved on 17 October 2022. He also has a career high ATP doubles ranking of World No. 288 achieved on 3 April 2023.
Álvarez Varona made his ATP main draw debut at the 2022 Barcelona Open Banc Sabadell after qualifying for the singles main draw, defeating Philipp Kohlschreiber and wildcard Max Alcalá Gurri before losing to Brandon Nakashima.
Ranked No. 927, at the 2024 Barcelona Open Banc Sabadell he entered the qualifying competition with a wildcard.