| Singles | |
|---|---|
| 2024 Poznań Open | |
| Champion |  Maks Kaśnikowski |
| Runner-up |  Camilo Ugo Carabelli |
| Score | 3–6, 6–4, 6–3 |
Mariano Navone was the defending champion [1] but chose not to defend his title.
Maks Kaśnikowski won the title after defeating Camilo Ugo Carabelli 3–6, 6–4, 6–3 in the final.
Albert Ramos Viñolas (first round) Camilo Ugo Carabelli (final) Oriol Roca Batalla (first round)
Rudolf Molleker (first round)
Vitaliy Sachko (second round)
Nick Hardt (quarterfinals)
Franco Agamenone (withdrew)
Dmitry Popko (first round) Timofey Skatov (first round)| Semifinals | Final | ||||||||||||
| Maks Kaśnikowski | 3 | 6 | 6 | ||||||||||
| Kamil Majchrzak | 6 | 3 | 4 | ||||||||||
| Maks Kaśnikowski | 3 | 6 | 6 | ||||||||||
| 2 | Camilo Ugo Carabelli | 6 | 4 | 3 | |||||||||
| Genaro Alberto Olivieri | 4 | 4 | |||||||||||
| 2 | Camilo Ugo Carabelli | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Ramos Viñolas | 3 | 67 | ||||||||||||||||||||||||
| M Kaśnikowski | 6 | 79 | M Kaśnikowski | 6 | 77 | ||||||||||||||||||||||
| Alt | G Fonio | 6 | 6 | Alt | G Fonio | 3 | 60 | ||||||||||||||||||||
| Alt |  T Kodat | 3 | 4 | M Kaśnikowski | 6 | 6 | |||||||||||||||||||||
| Alt |  O Luz | 5 | 61 |  D Svrčina | 4 | 3 | |||||||||||||||||||||
| G Mager | 7 | 77 | G Mager | 3 | 4 | ||||||||||||||||||||||
| D Svrčina | 6 | 63 | 77 | D Svrčina | 6 | 6 | |||||||||||||||||||||
| 9 | T Skatov | 2 | 77 | 64 | M Kaśnikowski | 3 | 6 | 6 | |||||||||||||||||||
| 4 | R Molleker | 4 | 2 | K Majchrzak | 6 | 3 | 4 | ||||||||||||||||||||
 FC Jianu | 6 | 6 | FC Jianu | 6 | 4 | 4 | |||||||||||||||||||||
| Samuel Vincent Ruggeri | 6 | 6 | S Vincent Ruggeri | 3 | 6 | 6 | |||||||||||||||||||||
| Alt |  R Noguchi | 1 | 4 | S Vincent Ruggeri | 6 | 1 | 3 | ||||||||||||||||||||
| WC | Viacheslav Bielinskyi | 3 | 4 | K Majchrzak | 4 | 6 | 6 | ||||||||||||||||||||
| K Majchrzak | 6 | 6 | K Majchrzak | 7 | 4 | 77 | |||||||||||||||||||||
| WC | P Carreño Busta | 77 | 77 | WC | P Carreño Busta | 5 | 6 | 62 | |||||||||||||||||||
| 8 | D Popko | 65 | 64 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | N Hardt | 6 | 6 | ||||||||||||||||||||||||
 I Gakhov | 1 | 4 | 6 | N Hardt | 6 | 6 | |||||||||||||||||||||
| Q | Hynek Bartoň | 7 | 6 | Q | H Bartoň | 2 | 1 | ||||||||||||||||||||
| WC | Olaf Pieczkowski | 5 | 0 | 6 | N Hardt | 5 | 2 | ||||||||||||||||||||
| Q |  Matthew Dellavedova | 1 | 5 | GA Olivieri | 7 | 6 | |||||||||||||||||||||
| GA Olivieri | 6 | 7 | GA Olivieri | 1 | 6 | 6 | |||||||||||||||||||||
| E Dalla Valle | 6 | 6 | E Dalla Valle | 6 | 3 | 4 | |||||||||||||||||||||
| 3 | O Roca Batalla | 1 | 3 | GA Olivieri | 4 | 4 | |||||||||||||||||||||
| 5 | V Sachko | 6 | 6 | 2 | C Ugo Carabelli | 6 | 6 | ||||||||||||||||||||
| Q |  M Dodig | 4 | 4 | 5 | V Sachko | 2 | 6 | 1 | |||||||||||||||||||
| Q |  G Elias | 3 | 6 | 6 | Q | G Elias | 6 | 4 | 6 | ||||||||||||||||||
| Q | D Michalski | 6 | 4 | 3 | Q | G Elias | 7 | 5 | 3 | ||||||||||||||||||
| Q | D Dutra da Silva | 6 | 6 | 2 | C Ugo Carabelli | 5 | 7 | 6 | |||||||||||||||||||
| LL | J McCabe | 3 | 2 | Q | D Dutra da Silva | 4 | 5 | ||||||||||||||||||||
| N Sánchez Izquierdo | 4 | 2 | 2 | C Ugo Carabelli | 6 | 7 | |||||||||||||||||||||
| 2 | C Ugo Carabelli | 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.
Santiago Rodríguez Taverna was the defending champion but lost in the quarterfinals to Genaro Alberto Olivieri.
Nicolás Jarry was the defending champion but chose not to defend his title.
Sergio Galdós and Gonçalo Oliveira were the defending champions but only Galdós chose to defend his title, partnering Renzo Olivo. Galdós lost in the semifinals to Orlando Luz and Camilo Ugo Carabelli.
This was the first edition of the tournament.
Camilo Ugo Carabelli was the defending champion but lost in the second round to Giovanni Mpetshi Perricard.
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.
Pedro Cachin was the defending champion but chose not to defend his title.
Paul Jubb was the defending champion but chose not to defend his title.
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.
Andrea Collarini was the defending champion but chose not to defend his title.
Facundo Díaz Acosta defeated Nicolás Jarry in the final, 6–3, 6–4 to win the singles tennis title at the 2024 Argentina Open. He did not lose a set en route to his first ATP Tour title and became the first wildcard to win the Argentina Open, as well as the first unseeded player to win the title since Alexandr Dolgopolov in 2017.
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.
Alejandro Tabilo was the defending champion but chose not to defend his title.
Camilo Ugo Carabelli was the defending champion but lost in the second round to Juan Ignacio Londero.
Mariano Navone was the defending champion but chose not to defend his title.
Aleksandar Kovacevic was the defending champion but lost in the second round to Juan Carlos Prado Ángelo.