| Singles | |
|---|---|
| 2023 Città di Como Challenger | |
| Champion |  Thiago Seyboth Wild |
| Runner-up |  Pedro Martínez |
| Score | 5–7, 6–2, 6–3 |
Cedrik-Marcel Stebe was the defending champion [1] but chose not to defend his title.
Thiago Seyboth Wild won the title after defeating Pedro Martínez 5–7, 6–2, 6–3 in the final.
Thiago Seyboth Wild (champion)
Zsombor Piros (second round) Thiago Monteiro (first round)
Benoît Paire (semifinals) Pedro Martínez (final)
Flavio Cobolli (first round) Fabio Fognini (second round, retired)
Ivan Gakhov (second round, retired)| Semifinals | Final | ||||||||||||
| 1 | Thiago Seyboth Wild | 7 | 6 | ||||||||||
| 4 | Benoît Paire | 5 | 3 | ||||||||||
| 1 | Thiago Seyboth Wild | 5 | 6 | 6 | |||||||||
| 5 | Pedro Martínez | 7 | 2 | 3 | |||||||||
| WC | Stefano Napolitano | 2 | 64 | ||||||||||
| 5 | Pedro Martínez | 6 | 77 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | T Seyboth Wild | 6 | 6 | ||||||||||||||||||||||||
| F Agamenone | 3 | 4 | 1 | T Seyboth Wild | 6 | 6 | |||||||||||||||||||||
| Alt | N Sánchez Izquierdo | 3 | 7 | 3 | Alt |  L Neumayer | 3 | 4 | |||||||||||||||||||
| Alt | L Neumayer | 6 | 5 | 6 | 1 | T Seyboth Wild | 6 | 6 | |||||||||||||||||||
 J Sels | 2 | 2 |  R Molleker | 1 | 3 | ||||||||||||||||||||||
| A Giannessi | 6 | 6 | A Giannessi | 3 | 1 | ||||||||||||||||||||||
| R Molleker | 6 | 6 | R Molleker | 6 | 6 | ||||||||||||||||||||||
| 6 | F Cobolli | 3 | 3 | 1 | T Seyboth Wild | 7 | 6 | ||||||||||||||||||||
| 4 | B Paire | 6 | 6 | 4 | B Paire | 5 | 3 | ||||||||||||||||||||
| Q | C Hemery | 1 | 0 | 4 | B Paire | 5 | 6 | 3 | |||||||||||||||||||
 N Fatić | 2 | 4 | WC | L Carboni | 7 | 2 | 0r | ||||||||||||||||||||
| WC | Lorenzo Carboni | 6 | 6 | 4 | B Paire | 4 | 6 | 6 | |||||||||||||||||||
 D Kuzmanov | 6 | 6 | D Kuzmanov | 6 | 4 | 3 | |||||||||||||||||||||
| Q |  M Zekić | 2 | 3 | D Kuzmanov | 6 | 2 | |||||||||||||||||||||
 A Martin | 4 | 1 | 8 | I Gakhov | 2 | 0r | |||||||||||||||||||||
| 8 | I Gakhov | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7/WC | F Fognini | 3 | 6 | 6 | |||||||||||||||||||||||
 Gerard Campana Lee | 6 | 4 | 0 | 7/WC | F Fognini | 5 | 0r | ||||||||||||||||||||
| M Gigante | 3 | 0 | WC | S Napolitano | 7 | 3 | |||||||||||||||||||||
| WC | S Napolitano | 6 | 6 | WC | S Napolitano | 6 | 2 | 6 | |||||||||||||||||||
| Q | M Bourgue | 7 | 6 | Alt | L Darderi | 3 | 6 | 3 | |||||||||||||||||||
 D Ajduković | 5 | 1 | Q | M Bourgue | 62 | 2 | |||||||||||||||||||||
| Alt | L Darderi | 6 | 6 | Alt | L Darderi | 77 | 6 | ||||||||||||||||||||
| 3 | T Monteiro | 3 | 2 | WC | S Napolitano | 2 | 64 | ||||||||||||||||||||
| 5 | P Martínez | 6 | 6 | 5 | P Martínez | 6 | 77 | ||||||||||||||||||||
| Edoardo Lavagno | 0 | 1 | 5 | P Martínez | 6 | 77 | |||||||||||||||||||||
| Q | V Royer | 6 | 3 | 4 | Q | S Vincent Ruggeri | 4 | 64 | |||||||||||||||||||
| Q | Samuel Vincent Ruggeri | 3 | 6 | 6 | 5 | P Martínez | 6 | 6 | |||||||||||||||||||
 S Nagal | 6 | 0 | 77 | S Nagal | 4 | 4 | |||||||||||||||||||||
| R Bonadio | 4 | 6 | 64 | S Nagal | 6 | 6 | |||||||||||||||||||||
| Q | L Wessels | 2 | 4 | 2 | Z Piros | 3 | 4 | ||||||||||||||||||||
| 2 | Z Piros | 6 | 6 | ||||||||||||||||||||||||
Wu Yibing was the defending champion, but was no longer eligible to participate in junior tournaments.
Cedrik-Marcel Stebe was the defending champion but chose not to defend his title.
Guido Andreozzi was the defending champion but chose not to defend his title.
Guillermo Durán and Roberto Quiroz were the defending champions but only Quiroz chose to defend his title, partnering Yannick Hanfmann. Quiroz lost in the first round to Luis David Martínez and Felipe Meligeni Alves.
Thiago Monteiro was the defending champion and successfully defended his title, defeating Marco Cecchinato 7–6(7–3), 6–7(6–8), 7–5 in the final.
Fabio Fognini was the champion in 2014, when the event was last held, but chose to compete in Dubai instead.
Thiago Seyboth Wild was the defending champion but chose not to defend his title.
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.
Hubert Hurkacz defeated Jannik Sinner in the final, 7–6(7–4), 6–4 to win the men's singles tennis title at the 2021 Miami Open. It was his first Masters 1000 singles title, and he became the first Pole to win a Masters 1000 singles title.
Aslan Karatsev was the defending champion but chose not to defend his title.
This was the first edition of the tournament since 2011.
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.
Felipe Meligeni Alves was the defending champion but withdrew before his semifinal match with Luciano Darderi.
Francisco Comesaña was the defending champion but lost in the second round to Andrea Collarini.
This was the first edition of the tournament.
Defending champion Félix Auger-Aliassime defeated Hubert Hurkacz in the final, 7–6(7–3), 7–6(7–5) to win the singles tennis title at the 2023 Swiss Indoors. He saved a match point en route to his fifth career ATP Tour title, in the quarterfinals against Alexander Shevchenko.
Thiago Seyboth Wild was the defending champion but lost in the first round to Andrea Picchione.
Andrea Pellegrino was the defending champion but withdrew from the tournament before his first round match.
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