| Singles | |
|---|---|
| 2023 Guangzhou International Challenger | |
| Champion |  Térence Atmane |
| Runner-up |  Marc Polmans |
| Score | 4–6, 7–6(9–7), 6–4 |
Nikoloz Basilashvili was the defending champion [1] but chose not to defend his title.
Térence Atmane won the title after defeating Marc Polmans 4–6, 7–6(9–7), 6–4 in the final.
Christopher O'Connell (quarterfinals) Marc Polmans (final)
Shang Juncheng (second round, retired) Bu Yunchaokete (semifinals) Térence Atmane (champion)
Rio Noguchi (second round)
Evgeny Donskoy (semifinals) Li Tu (quarterfinals)| Semifinals | Final | ||||||||||||
| 5 | Térence Atmane | 6 | 6 | ||||||||||
| 4 | Bu Yunchaokete | 3 | 4 | ||||||||||
| 5 | Térence Atmane | 4 | 79 | 6 | |||||||||
| 2 | Marc Polmans | 6 | 67 | 4 | |||||||||
| 7 | Evgeny Donskoy | 3 | 4 | ||||||||||
| 2 | Marc Polmans | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | C O'Connell | 78 | 6 | ||||||||||||||||||||||||
 Dominik Palán | 66 | 2 | 1 | C O'Connell | 6 | 6 | |||||||||||||||||||||
 F Peliwo | 63 | 1 | Q |  A Kadhe | 4 | 2 | |||||||||||||||||||||
| Q | A Kadhe | 77 | 6 | 1 | C O'Connell | 5 | 3 | ||||||||||||||||||||
| WC | Mo Yecong | 3 | 3 | 5 | T Atmane | 7 | 6 | ||||||||||||||||||||
 Alafia Ayeni | 6 | 6 | A Ayeni | 62 | 61 | ||||||||||||||||||||||
 L Giustino | 0 | 6 | 3 | 5 | T Atmane | 77 | 77 | ||||||||||||||||||||
| 5 | T Atmane | 6 | 4 | 6 | 5 | T Atmane | 6 | 6 | |||||||||||||||||||
| 4 | Y Bu | 6 | 6 | 4 | Y Bu | 3 | 4 | ||||||||||||||||||||
| Q |  Yin Bang-shuo | 2 | 3 | 4 | Y Bu | 6 | 6 | ||||||||||||||||||||
| L Saville | 6 | 2 | 6 | L Saville | 4 | 0 | |||||||||||||||||||||
| H Moriya | 3 | 6 | 4 | 4 | Y Bu | 7 | 6 | ||||||||||||||||||||
| Q | Sun Qian | 1 | 2 | D Sweeny | 5 | 3 | |||||||||||||||||||||
| D Sweeny | 6 | 6 | D Sweeny | 77 | 7 | ||||||||||||||||||||||
| E Zhu | 3 | 2 | 6 | R Noguchi | 61 | 5 | |||||||||||||||||||||
| 6 | R Noguchi | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | E Donskoy | 6 | 77 | ||||||||||||||||||||||||
 A Bellier | 4 | 62 | 7 | E Donskoy | 6 | 4 | 6 | ||||||||||||||||||||
| A Kachmazov | 6 | 6 | A Kachmazov | 2 | 6 | 2 | |||||||||||||||||||||
| WC | Z Li | 3 | 4 | 7 | E Donskoy | 3 | 77 | 6 | |||||||||||||||||||
| A Bolt | 7 | 2 | 66 | O Jasika | 6 | 65 | 2 | ||||||||||||||||||||
| O Jasika | 5 | 6 | 78 | O Jasika | 6 | 5 | |||||||||||||||||||||
| Q | Mikalai Haliak | 79 | 1 | 2 | 3 | J Shang | 3 | 0r | |||||||||||||||||||
| 3 | J Shang | 67 | 6 | 6 | 7 | E Donskoy | 3 | 4 | |||||||||||||||||||
| 8 | L Tu | 6 | 2 | 6 | 2 | M Polmans | 6 | 6 | |||||||||||||||||||
| N Chappell | 1 | 6 | 2 | 8 | L Tu | 64 | 6 | 6 | |||||||||||||||||||
| WC | Mu Tao | 2 | 6 | 1 | Q | A Wang | 77 | 2 | 3 | ||||||||||||||||||
| Q | A Wang | 6 | 1 | 6 | 8 | L Tu | 3 | 4 | |||||||||||||||||||
| Q | L Castelnuovo | 1 | 2 | 2 | M Polmans | 6 | 6 | ||||||||||||||||||||
 C Sinclair | 6 | 6 | C Sinclair | 4 | 4 | ||||||||||||||||||||||
| Alt | A Weber | 65 | 5 | 2 | M Polmans | 6 | 6 | ||||||||||||||||||||
| 2 | M Polmans | 77 | 7 | ||||||||||||||||||||||||
Benjamin Mitchell was the defending champion but chose not to defend his title.
Gaël Monfils was the defending champion, but lost in the second round to Yuki Bhambri.
Cameron Norrie was the defending champion but chose not to defend his title.
Andreas Seppi was the defending champion but chose not to defend his title.
Marc Polmans was the defending champion but lost in the second round to Tristan Lamasine.
Marcel Granollers was the defending champion but chose not to defend his title.
Yasutaka Uchiyama was the defending champion but chose not to defend his title.
Bradley Klahn was the defending champion but chose not to defend his title.
Jay Clarke was the defending champion but chose not to defend his title.
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Blaž Kavčič was the defending champion but chose not to defend his title.
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Jordan Thompson was the defending champion but chose not to defend his title.
Rogério Dutra Silva was the defending champion but chose not to defend his title.
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Daniil Medvedev defeated Pierre-Hugues Herbert in the final, 6–4, 6–7(4–7), 6–4 to capture the men's singles tennis title at the 2021 Open 13 Provence.
John Millman was the defending champion, but lost in the quarterfinals to James Duckworth.
Marc Polmans was the defending champion but chose not to participate.
Marc Polmans was the defending champion but chose not to defend his title.
Yasutaka Uchiyama was the defending champion but retired from his second round match against Christopher O'Connell.