| Singles | |
|---|---|
| 2024 Challenger AAT | |
| Champion |  Gonzalo Bueno |
| Runner-up |  Dmitry Popko |
| Score | 6–4, 2–6, 7–6(7–4) |
Thiago Seyboth Wild was the defending champion [1] but chose not to defend his title.
Gonzalo Bueno won the title after defeating Dmitry Popko 6–4, 2–6, 7–6(7–4) in the final.
Lukas Neumayer (second round)
Edoardo Lavagno (first round)
Juan Pablo Ficovich (first round)
Tristan Boyer (quarterfinals) Renzo Olivo (second round)
Murkel Dellien (second round)
Nikolás Sánchez Izquierdo (first round)
Oleksii Krutykh (second round)| Semifinals | Final | ||||||||||||
 João Fonseca | 2 | 4 | |||||||||||
| Q | Dmitry Popko | 6 | 6 | ||||||||||
| Q | Dmitry Popko | 4 | 6 | 64 | |||||||||
| Q | Gonzalo Bueno | 6 | 2 | 77 | |||||||||
| Q | Gonzalo Bueno | 6 | 6 | ||||||||||
| João Lucas Reis da Silva | 4 | 4 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | L Neumayer | 78 | 6 | ||||||||||||||||||||||||
| C Sánchez Jover | 66 | 3 | 1 | L Neumayer | 6 | 67 | 4 | ||||||||||||||||||||
 Á Guillén Meza | 4 | 4 | G Mager | 3 | 79 | 6 | |||||||||||||||||||||
| G Mager | 6 | 6 | G Mager | 1 | 3 | ||||||||||||||||||||||
| Alt |  F Gill | 6 | 1 | 2 | J Fonseca | 6 | 6 | ||||||||||||||||||||
| J Fonseca | 2 | 6 | 6 | J Fonseca | 7 | 6 | |||||||||||||||||||||
 L Draxl | 6 | 2r | 6 | M Dellien | 5 | 4 | |||||||||||||||||||||
| 6 | M Dellien | 1 | 5 | J Fonseca | 2 | 4 | |||||||||||||||||||||
| 4 | T Boyer | 3 | 6 | 6 | Q | D Popko | 6 | 6 | |||||||||||||||||||
| Alt | JB Torres | 6 | 2 | 1 | 4 | T Boyer | 6 | 3 | 6 | ||||||||||||||||||
| H Casanova | 6 | 77 | H Casanova | 3 | 6 | 3 | |||||||||||||||||||||
| Alexander Weis | 2 | 61 | 4 | T Boyer | 66 | 3 | |||||||||||||||||||||
| Q | D Popko | 5 | 6 | 6 | Q | D Popko | 78 | 6 | |||||||||||||||||||
| Alt | O Luz | 7 | 4 | 1 | Q | D Popko | 79 | 6 | |||||||||||||||||||
 Timo Stodder | 6 | 77 | T Stodder | 67 | 4 | ||||||||||||||||||||||
| 7 | N Sánchez Izquierdo | 2 | 65 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | R Olivo | 6 | 6 | ||||||||||||||||||||||||
| WC | Luciano Emanuel Ambrogi | 3 | 2 | 5 | R Olivo | 5 | 2 | ||||||||||||||||||||
| WC | Alex Barrena | 4 | 7 | 3 | Q | G Bueno | 7 | 6 | |||||||||||||||||||
| Q | G Bueno | 6 | 5 | 6 | Q | G Bueno | 6 | 6 | |||||||||||||||||||
| WC | Lautaro Midón | 66 | 1 |  M Houkes | 1 | 4 | |||||||||||||||||||||
| M Houkes | 78 | 6 | M Houkes | 4 | 6 | 6 | |||||||||||||||||||||
| Q | MF Descotte | 6 | 3 | 6 | Q | MF Descotte | 6 | 3 | 3 | ||||||||||||||||||
| 3 | JP Ficovich | 4 | 6 | 1 | Q | G Bueno | 6 | 6 | |||||||||||||||||||
| 8 | O Krutykh | 4 | 7 | 77 | JL Reis da Silva | 4 | 4 | ||||||||||||||||||||
| Q | G Villanueva | 6 | 5 | 62 | 8 | O Krutykh | 63 | 6 | 3 | ||||||||||||||||||
| Q | M Alves | 6 | 6 | Q | M Alves | 77 | 3 | 6 | |||||||||||||||||||
| Q | V Aboian | 1 | 2 | Q | M Alves | 4 | 3 | ||||||||||||||||||||
| P Sakamoto | 6 | 77 | JL Reis da Silva | 6 | 6 | ||||||||||||||||||||||
| Alt | C Taberner | 4 | 60 | P Sakamoto | 5 | 0 | |||||||||||||||||||||
| JL Reis da Silva | 4 | 6 | 77 | JL Reis da Silva | 7 | 6 | |||||||||||||||||||||
| 2 | Edoardo Lavagno | 6 | 3 | 64 | |||||||||||||||||||||||
Kenneth Raisma and Stefanos Tsitsipas were the defending champions but both players were no longer eligible to participate in junior events.
Juan Carlos Aguilar and Felipe Meligeni Alves were the defending champions, but both players were ineligible to participate.
Ondřej Štyler and Naoki Tajima won the boys' doubles tennis title at the 2018 French Open, defeating Ray Ho and Tseng Chun-hsin in the final, 6–4, 6–4.
Hsu Yu-hsiou and Wu Yibing were the defending champions, but both players were no longer eligible to participate in junior tournaments.
David Marrero and Fernando Verdasco were the defending champions, but Verdasco chose not to defend the title and Marrero chose to compete in Marseille instead.
Fabio Fognini was the champion in 2014, when the event was last held, but chose to compete in Dubai instead.
Pablo Cuevas was the defending champion but lost in the quarterfinals to Daniel Altmaier.
Gianluca Mager was the defending champion but chose not to defend his title.
Thiago Seyboth Wild was the defending champion but chose not to defend his title.
Juan Pablo Varillas was the defending champion but chose not to participate.
Ilya Ivashka was the defending champion but chose not to defend his title.
Diego Schwartzman defeated Francisco Cerúndolo in the final, 6–1, 6–2 to win the men's singles tennis title at the 2021 Argentina Open.
Cristian Garín defeated Facundo Bagnis in the final, 6–4, 6–7(3–7), 7–5 to capture the men's singles tennis title at the 2021 Chile Open.
Alexander Zverev defeated top seed Stefanos Tsitsipas in the final, 6–4, 7–6(7–3) to win the men's singles tennis title at the 2021 Mexican Open.
Emilio Gómez was the defending champion but chose not to defend his title.
Aslan Karatsev was the defending champion but chose not to defend his title.
Benoît Paire was the defending champion from when the event was last held in 2019, but chose to participate in Geneva instead.
Andrey Rublev was the defending champion, but chose to not defend his title as he and other Russian Olympic athletes were sent to Yuzhno-Sakhalinsk for training sessions.
Casper Ruud defeated the defending champion Diego Schwartzman in the final, 5–7, 6–2, 6–3 to win the singles title at the 2022 Argentina Open.
Cedrik-Marcel Stebe was the defending champion but chose not to defend his title.