| Singles | |
|---|---|
| 2024 Antofagasta Challenger | |
| Champion |  Juan Manuel Cerúndolo |
| Runner-up |  Daniel Vallejo |
| Score | 3–6, 6–2, 6–4 |
Camilo Ugo Carabelli was the defending champion [1] but lost in the second round to Juan Ignacio Londero.
Juan Manuel Cerúndolo won the title after defeating Daniel Vallejo 3–6, 6–2, 6–4 in the final.
Camilo Ugo Carabelli (second round)
Hugo Dellien (second round)
Jesper de Jong (semifinals)
Gustavo Heide (quarterfinals) Felipe Meligeni Alves (withdrew) Murkel Dellien (quarterfinals) Facundo Mena (second round) Juan Manuel Cerúndolo (champion)| Semifinals | Final | ||||||||||||
| 8 | Juan Manuel Cerúndolo | 6 | 6 | ||||||||||
| Andrea Collarini | 3 | 2 | |||||||||||
| 8 | Juan Manuel Cerúndolo | 3 | 6 | 6 | |||||||||
| Daniel Vallejo | 6 | 2 | 4 | ||||||||||
| 3 | Jesper de Jong | 2 | 4 | ||||||||||
| Daniel Vallejo | 6 | 6 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | C Ugo Carabelli | 77 | 65 | 77 | |||||||||||||||||||||||
 Á Guillén Meza | 64 | 77 | 61 | 1 | C Ugo Carabelli | 4 | 6 | 3 | |||||||||||||||||||
| Q | Leonardo Aboian | 3 | 5 | WC | JI Londero | 6 | 2 | 6 | |||||||||||||||||||
| WC | JI Londero | 6 | 7 | WC | JI Londero | 2 | 4 | ||||||||||||||||||||
| JP Ficovich | 0 | 3 | 8 | JM Cerúndolo | 6 | 6 | |||||||||||||||||||||
 M Soto | 6 | 6 | M Soto | 65 | 4 | ||||||||||||||||||||||
| Q | J Pereira | 4 | 4 | 8 | JM Cerúndolo | 77 | 6 | ||||||||||||||||||||
| 8 | JM Cerúndolo | 6 | 6 | 8 | JM Cerúndolo | 6 | 6 | ||||||||||||||||||||
| 4 | G Heide | 6 | 6 | A Collarini | 3 | 2 | |||||||||||||||||||||
| Q | V Aboian | 1 | 4 | 4 | G Heide | 6 | 6 | ||||||||||||||||||||
| Q | Alex Barrena | 63 | 77 | 1 | Alt | O Luz | 2 | 1 | |||||||||||||||||||
| Alt | O Luz | 77 | 65 | 6 | 4 | G Heide | 3 | 6 | 1 | ||||||||||||||||||
| M Pucinelli de Almeida | 6 | 6 | A Collarini | 6 | 1 | 6 | |||||||||||||||||||||
| WC | Daniel Antonio Núñez | 2 | 0 | M Pucinelli de Almeida | 6 | 3 | 3 | ||||||||||||||||||||
| A Collarini | 6 | 6 | A Collarini | 3 | 6 | 6 | |||||||||||||||||||||
| LL | Wilson Leite | 2 | 3 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | M Dellien | 5 | 6 | 2 | |||||||||||||||||||||||
| LL |  Edoardo Lavagno | 7 | 3 | 0r | 6 | M Dellien | 7 | 6 | |||||||||||||||||||
| JL Reis da Silva | 5 | 1 |  F Roncadelli | 5 | 2 | ||||||||||||||||||||||
| F Roncadelli | 7 | 6 | 6 | M Dellien | 4 | 2 | |||||||||||||||||||||
| Q | Tomás Farjat | 1 | 2 | 3 | J de Jong | 6 | 6 | ||||||||||||||||||||
| Karue Sell | 6 | 6 | K Sell | 3 | 3 | ||||||||||||||||||||||
 E Couacaud | 1 | 5 | 3 | J de Jong | 6 | 6 | |||||||||||||||||||||
| 3 | J de Jong | 6 | 7 | 3 | J de Jong | 2 | 4 | ||||||||||||||||||||
| 7 | F Mena | 6 | 6 | AD Vallejo | 6 | 6 | |||||||||||||||||||||
| Alt | D Dutra da Silva | 2 | 1 | 7 | F Mena | 65 | 4 | ||||||||||||||||||||
| Q | Luciano Emanuel Ambrogi | 6 | 6 | Q | LE Ambrogi | 77 | 6 | ||||||||||||||||||||
| WC | Ignacio Becerra | 3 | 1 | Q | LE Ambrogi | 4 | 6 | 1 | |||||||||||||||||||
| AD Vallejo | 6 | 6 | AD Vallejo | 6 | 2 | 6 | |||||||||||||||||||||
| Alt | G Villanueva | 2 | 4 | AD Vallejo | 6 | 6 | |||||||||||||||||||||
| M Alves | 3 | 4 | 2 | H Dellien | 3 | 2 | |||||||||||||||||||||
| 2 | H Dellien | 6 | 6 | ||||||||||||||||||||||||
Daniel Elahi Galán was the defending champion, but chose not to defend his title.
Sebastián Báez was the defending champion but chose not to defend his title.
This was the first edition of the tournament as part of the Legión Sudamericana.
Francisco Cerúndolo was the defending champion but chose not to defend his title.
Facundo Díaz Acosta was the defending champion but lost in the final to Juan Manuel Cerúndolo.
Hugo Dellien was the defending champion but chose not to defend his title.
Camilo Ugo Carabelli was the defending champion but chose not to defend his title.
Juan Manuel Cerúndolo was the defending champion and successfully defended his title, defeating Jesper de Jong 6–3, 2–6, 6–2 in the final.
Daniel Elahi Galán was the defending champion but chose not to defend his title.
Nicolás Jarry defeated Tomás Martín Etcheverry in the final, 6–7(5–7), 7–6(7–5), 6–2 to win the singles tennis title at the 2023 Chile Open. This was Jarry's first ATP title since 2019.
Hugo Dellien was the defending champion and successfully defended his title after defeating Thiago Seyboth Wild 3–6, 6–3, 6–3 in the final.
Paul Jubb was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Jan Choinski was the defending champion but lost in the second round to Andrea Pellegrino.
Daniel Altmaier was the defending champion but chose not to defend his title.
Sebastián Báez defeated Alejandro Tabilo in the final, 3–6, 6–0, 6–4 to win the singles tennis title at the 2024 Chile Open. It was his sixth career ATP Tour title and his second title in as many weeks, having won the Rio Open the week before.
Mariano Navone was the defending champion but chose not to defend his title.
Hugo Dellien was the defending champion but lost in the quarterfinals to Facundo Bagnis.
Camilo Ugo Carabelli was the defending champion but chose not to defend his title.
Hugo Gaston was the defending champion but chose not to defend his title.