| Singles | |
|---|---|
| 2024 Challenger de Buenos Aires | |
| Champion |  Francisco Comesaña |
| Runner-up | Federico Coria |
| Score | 1–6, 7–6(9–7), 6–4 |
Mariano Navone was the defending champion [1] but chose not to defend his title.
Francisco Comesaña won the title after defeating Federico Coria 1–6, 7–6(9–7), 6–4 in the final.
Federico Coria (final) Francisco Comesaña (champion)
Hugo Dellien (semifinals) Camilo Ugo Carabelli (quarterfinals)
Jesper de Jong (quarterfinals) Román Andrés Burruchaga (second round)
Gustavo Heide (quarterfinals) Federico Agustín Gómez (first round)| Semifinals | Final | ||||||||||||
| 1 | Federico Coria | 713 | 7 | ||||||||||
| WC | Juan Bautista Torres | 611 | 5 | ||||||||||
| 1 | Federico Coria | 6 | 67 | 4 | |||||||||
| 2 | Francisco Comesaña | 1 | 79 | 6 | |||||||||
| 3 | Hugo Dellien | 4 | 6 | 2 | |||||||||
| 2 | Francisco Comesaña | 6 | 3 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | F Coria | 5 | 6 | 6 | |||||||||||||||||||||||
 Á Guillén Meza | 7 | 1 | 2 | 1 | F Coria | 6 | 6 | ||||||||||||||||||||
| WC | GA Olivieri | 65 | 4 | Q | G Villanueva | 4 | 3 | ||||||||||||||||||||
| Q | G Villanueva | 77 | 6 | 1 | F Coria | 6 | 6 | ||||||||||||||||||||
 E Couacaud | 6 | 6 | 7 | G Heide | 4 | 4 | |||||||||||||||||||||
| WC | JI Londero | 4 | 4 | E Couacaud | 4 | 63 | |||||||||||||||||||||
| Q |  C Huertas del Pino | 4 | 5 | 7 | G Heide | 6 | 77 | ||||||||||||||||||||
| 7 | G Heide | 6 | 7 | 1 | F Coria | 713 | 7 | ||||||||||||||||||||
| 4 | C Ugo Carabelli | 6 | 6 | WC | JB Torres | 611 | 5 | ||||||||||||||||||||
| S Rodríguez Taverna | 1 | 3 | 4 | C Ugo Carabelli | 6 | 6 | |||||||||||||||||||||
| Q | V Aboian | 5 | 4 | M Dellien | 4 | 4 | |||||||||||||||||||||
| M Dellien | 7 | 6 | 4 | C Ugo Carabelli | 0 | 4 | |||||||||||||||||||||
| WC | JB Torres | 6 | 6 | WC | JB Torres | 6 | 6 | ||||||||||||||||||||
| JP Ficovich | 2 | 4 | WC | JB Torres | 6 | 6 | |||||||||||||||||||||
| JM Cerúndolo | 6 | 6 | JM Cerúndolo | 3 | 4 | ||||||||||||||||||||||
| 8 | FA Gómez | 3 | 2 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | J de Jong | 6 | 6 | ||||||||||||||||||||||||
| F Mena | 4 | 0 | 5 | J de Jong | 6 | 6 | |||||||||||||||||||||
| Q | Tomás Farjat | 2 | 6 | 0 | A Collarini | 4 | 3 | ||||||||||||||||||||
| A Collarini | 6 | 3 | 6 | 5 | J de Jong | 3 | 6 | 2 | |||||||||||||||||||
| F Meligeni Alves | 1 | 77 | 78 | 3 | H Dellien | 6 | 1 | 6 | |||||||||||||||||||
| Q | Luciano Emanuel Ambrogi | 6 | 65 | 66 | F Meligeni Alves | 3 | 4 | ||||||||||||||||||||
 H Habib | 0 | 2 | 3 | H Dellien | 6 | 6 | |||||||||||||||||||||
| 3 | H Dellien | 6 | 6 | 3 | H Dellien | 4 | 6 | 2 | |||||||||||||||||||
| 6 | RA Burruchaga | 3 | 79 | 6 | 2 | F Comesaña | 6 | 3 | 6 | ||||||||||||||||||
| SE |  AD Vallejo | 6 | 67 | 1 | 6 | RA Burruchaga | 1 | 3 | |||||||||||||||||||
| P Sakamoto | 64 | 2 | JP Varillas | 6 | 6 | ||||||||||||||||||||||
| JP Varillas | 77 | 6 | JP Varillas | 4 | 78 | 5 | |||||||||||||||||||||
 D Popko | 6 | 64 | 77 | 2 | F Comesaña | 6 | 66 | 7 | |||||||||||||||||||
| Q | N Kicker | 2 | 77 | 63 | D Popko | 64 | 67 | ||||||||||||||||||||
| Alt | G Bueno | 5 | 4 | 2 | F Comesaña | 77 | 79 | ||||||||||||||||||||
| 2 | F Comesaña | 7 | 6 | ||||||||||||||||||||||||
Jo-Wilfried Tsonga was the defending champion, but due to injury did not defend his title.
Andy Murray was the defending champion, but this year he decided to participate in the Cologne event instead, where he later withdrew due to hip injury.
Máximo González was the defending champion when the event was last held in 2015, but he chose not to defend his title.
This was the first edition of the tournament. The tournament was originally scheduled to be played in Villa Allende but was relocated to Buenos Aires due to operational issues at the venue in Villa Allende.
Francisco Cerúndolo defeated Sebastián Báez in the final, 7–6(7–4), 6–2 to win the men's singles tennis title at the 2022 Swedish Open. It was his maiden ATP Tour title.
Arthur Rinderknech was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Paul Jubb was the defending champion but chose not to defend his title.
Jan Choinski was the defending champion but lost in the second round to Andrea Pellegrino.
Juan Manuel Cerúndolo was the defending champion but lost in the quarterfinals to Luciano Darderi.
Mariano Navone was the defending champion and successfully defended his title after defeating Andrea Pellegrino 3–6, 6–2, 6–3 in the final.
Álvaro Guillén Meza was the defending champion but lost in the second round to Mariano Navone.
Genaro Alberto Olivieri was the defending champion but chose not to defend his title.
Thiago Monteiro was the defending champion but lost in the quarterfinals to Román Andrés Burruchaga.
Sebastián Báez defeated Mariano Navone in the final, 6–2, 6–1 to win the singles tennis title at the 2024 Rio Open. It was his fifth ATP Tour title and his first ATP 500 title. Navone was the second qualifier to contest the Rio Open final, following Gianluca Mager in 2020.
Mariano Navone was the defending champion but chose not to defend his title.
Tomás Barrios Vera was the defending champion but chose not to defend his title.
Federico Coria was the defending champion but chose not to defend his title.
Alexandre Müller was the defending champion but lost in the first round to Jesper de Jong.
Diego Hidalgo and Cristian Rodríguez were the defending champions but chose not to defend their title.