| Singles | |
|---|---|
| 2023 Challenger de Tigre | |
| Champion |  Juan Manuel Cerúndolo |
| Runner-up |  Murkel Dellien |
| Score | 4–6, 6–4, 6–2 |
Camilo Ugo Carabelli was the defending champion [1] but chose not to defend his title.
Juan Manuel Cerúndolo won the title after defeating Murkel Dellien 4–6, 6–4, 6–2 in the final.
Juan Manuel Cerúndolo (champion) Andrea Collarini (first round) Juan Bautista Torres (first round) Hernán Casanova (second round)
Alessandro Giannessi (semifinals)
Oriol Roca Batalla (first round) Francisco Comesaña (first round) Juan Ignacio Londero (quarterfinals)| Semifinals | Final | ||||||||||||
| 1 | Juan Manuel Cerúndolo | 6 | 7 | ||||||||||
| 5 | Alessandro Giannessi | 3 | 5 | ||||||||||
| 1 | Juan Manuel Cerúndolo | 4 | 6 | 6 | |||||||||
| Murkel Dellien | 6 | 4 | 2 | ||||||||||
| Murkel Dellien | 6 | 6 | |||||||||||
| Gonzalo Villanueva | 4 | 0 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | JM Cerúndolo | 6 | 6 | ||||||||||||||||||||||||
 T Droguet | 4 | 2 | 1 | JM Cerúndolo | 3 | 6 | 6 | ||||||||||||||||||||
| Q |  T Seyboth Wild | 77 | 6 | Q | T Seyboth Wild | 6 | 1 | 4 | |||||||||||||||||||
 Timo Stodder | 64 | 2 | 1 | JM Cerúndolo | 6 | 6 | |||||||||||||||||||||
 J de Jong | 6 | 6 | WC | G Andreozzi | 3 | 1 | |||||||||||||||||||||
| Q | JP Paz | 1 | 3 | J de Jong | 6 | 4 | 4 | ||||||||||||||||||||
| WC | G Andreozzi | 1 | 6 | 77 | WC | G Andreozzi | 2 | 6 | 6 | ||||||||||||||||||
| 7 | F Comesaña | 6 | 2 | 65 | 1 | JM Cerúndolo | 6 | 7 | |||||||||||||||||||
| 4 | H Casanova | 7 | 6 | 5 | A Giannessi | 3 | 5 | ||||||||||||||||||||
 M Echargui | 5 | 1 | 4 | H Casanova | 3 | 3 | |||||||||||||||||||||
| Edoardo Lavagno | 64 | 4 | WC | L Midón | 6 | 6 | |||||||||||||||||||||
| WC | Lautaro Midón | 77 | 6 | WC | L Midón | 5 | 1 | ||||||||||||||||||||
 Andrey Chepelev | 5 | 5 | A Giannessi | 7 | 6 | ||||||||||||||||||||||
| P Boscardin Dias | 2r | A Chepelev | 4 | 4 | |||||||||||||||||||||||
| WC | Luciano Emanuel Ambrogi | 5 | 0 | 5 | A Giannessi | 6 | 6 | ||||||||||||||||||||
| 5 | A Giannessi | 7 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | JI Londero | 6 | 6 | ||||||||||||||||||||||||
| Mathys Erhard | 0 | 4 | 8 | JI Londero | 6 | 6 | |||||||||||||||||||||
| D Dutra da Silva | 77 | 6 | D Dutra da Silva | 2 | 4 | ||||||||||||||||||||||
 E Zhu | 64 | 2 | 8 | JI Londero | 1 | 3 | |||||||||||||||||||||
| Q | C Sánchez Jover | 6 | 6 | M Dellien | 6 | 6 | |||||||||||||||||||||
| Alexander Weis | 4 | 2 | Q | C Sánchez Jover | 65 | 2 | |||||||||||||||||||||
| M Dellien | 6 | 1 | 710 | M Dellien | 77 | 6 | |||||||||||||||||||||
| 3 | JB Torres | 1 | 6 | 68 | M Dellien | 6 | 6 | ||||||||||||||||||||
| 6 | O Roca Batalla | 2 | 6 | 3 | G Villanueva | 4 | 0 | ||||||||||||||||||||
| G Villanueva | 6 | 2 | 6 | G Villanueva | 6 | 6 | |||||||||||||||||||||
 R Bertola | 6 | 2 | 6 | R Bertola | 2 | 3 | |||||||||||||||||||||
| Q | MF Descotte | 3 | 6 | 4 | G Villanueva | 7 | 65 | 6 | |||||||||||||||||||
| T Atmane | 6 | 3 | 67 | Q | V Aboian | 5 | 77 | 4 | |||||||||||||||||||
| Q | Alex Barrena | 1 | 6 | 79 | Q | A Barrena | 61 | 6 | 2 | ||||||||||||||||||
| Q | V Aboian | 5 | 6 | 77 | Q | V Aboian | 77 | 3 | 6 | ||||||||||||||||||
| 2 | A Collarini | 7 | 1 | 63 | |||||||||||||||||||||||
Guido Andreozzi and Guillermo Durán were the defending champions but only Durán chose to defend his title, partnering Mariano Kestelboim. Durán lost in the first round to Facundo Mena and Camilo Ugo Carabelli.
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.
Francisco Cerúndolo was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Facundo Díaz Acosta was the defending champion but lost in the final to Juan Manuel Cerúndolo.
Camilo Ugo Carabelli was the defending champion but lost in the second round to Giovanni Mpetshi Perricard.
Hugo Dellien 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.
Carlos Alcaraz defeated Cameron Norrie in the final, 6–3, 7–5 to win the singles tennis title at the 2023 Argentina Open.
Cameron Norrie defeated the defending champion Carlos Alcaraz in the final, 5–7, 6–4, 7–5 to win the singles tennis title at the 2023 Rio Open. It was their second final meeting in as many weeks, with Alcaraz winning the title in Buenos Aires the week prior.
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.
Jan Choinski was the defending champion but lost in the second round to Andrea Pellegrino.
Agustín Velotti was the defending champion from when the tournament was last held in 2016 but didn't defend his title as he retired from professional tennis.
Daniel Altmaier was the defending champion but chose not to defend his title.
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.