| Singles | |
|---|---|
| 2021 Almaty Challenger | |
| Champion |  Zizou Bergs |
| Runner-up |  Timofey Skatov |
| Score | 4–6, 6–3, 6–2 |
Lorenzo Giustino was the defending champion [1] but lost in the first round to Timofey Skatov.
Zizou Bergs won the title after defeating Skatov 4–6, 6–3, 6–2 in the final.
Andrej Martin (quarterfinals)
Mohamed Safwat (first round) Kimmer Coppejans (quarterfinals)
Enzo Couacaud (second round)
Lorenzo Giustino (first round) Dmitry Popko (semifinals, retired)
Denis Istomin (second round)
João Menezes (second round)| Semifinals | Final | ||||||||||||
| 6 | Dmitry Popko | 7 | 3 | 1r | |||||||||
| Zizou Bergs | 5 | 6 | 5 | ||||||||||
| Zizou Bergs | 4 | 6 | 6 | ||||||||||
| WC | Timofey Skatov | 6 | 3 | 2 | |||||||||
 Tseng Chun-hsin | 2 | 3 | |||||||||||
| WC | Timofey Skatov | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Martin | 6 | 6 | ||||||||||||||||||||||||
| WC | B Zhukayev | 2 | 1 | 1 | A Martin | 6 | 6 | ||||||||||||||||||||
 B Schnur | 6 | 6 | B Schnur | 2 | 2 | ||||||||||||||||||||||
| T-l Wu | 4 | 4 | 1 | A Martin | 5 | 3 | |||||||||||||||||||||
 T Gabashvili | 1 | 3 | 6 | D Popko | 7 | 6 | |||||||||||||||||||||
| Q |  FC Jianu | 6 | 6 | Q | FC Jianu | 5 | 3 | ||||||||||||||||||||
| Q |  V Orlov | 2 | 3 | 6 | D Popko | 7 | 6 | ||||||||||||||||||||
| 6 | D Popko | 6 | 6 | 6 | D Popko | 7 | 3 | 1r | |||||||||||||||||||
| 3 | K Coppejans | 6 | 6 | Z Bergs | 5 | 6 | 5 | ||||||||||||||||||||
| Alt |  R Ortega Olmedo | 1 | 2 | 3 | K Coppejans | 2 | 6 | 6 | |||||||||||||||||||
 N Serdarušić | 5 | 1 | GM Moroni | 6 | 3 | 1 | |||||||||||||||||||||
| GM Moroni | 7 | 6 | 3 | K Coppejans | 3 | 6 | 4 | ||||||||||||||||||||
| Z Bergs | 2 | 711 | 6 | Z Bergs | 6 | 2 | 6 | ||||||||||||||||||||
 MT Barrios Vera | 6 | 69 | 3 | Z Bergs | 6 | 6 | |||||||||||||||||||||
| E Tiurnev | 3 | 1 | 8 | J Menezes | 3 | 4 | |||||||||||||||||||||
| 8 | J Menezes | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | D Istomin | 3 | 6 | 6 | |||||||||||||||||||||||
 M Bašić | 6 | 4 | 2 | 7 | D Istomin | 67 | 4 | ||||||||||||||||||||
| C-h Tseng | 6 | 6 | C-h Tseng | 79 | 6 | ||||||||||||||||||||||
| F Meligeni Alves | 2 | 1 | C-h Tseng | 77 | 6 | ||||||||||||||||||||||
 D Kuzmanov | 6 | 6 | D Kuzmanov | 61 | 3 | ||||||||||||||||||||||
| A Menéndez Maceiras | 2 | 4 | D Kuzmanov | 7 | 6 | ||||||||||||||||||||||
| Q | V Sachko | 77 | 5 | 2 | 4 | E Couacaud | 5 | 0 | |||||||||||||||||||
| 4 | E Couacaud | 62 | 7 | 6 | C-h Tseng | 2 | 3 | ||||||||||||||||||||
| 5 | L Giustino | 4 | 6 | 2 | WC | T Skatov | 6 | 6 | |||||||||||||||||||
| WC | T Skatov | 6 | 3 | 6 | WC | T Skatov | 1 | 6 | 6 | ||||||||||||||||||
| WC | D Yevseyev | 6 | 4 | 7 | WC | D Yevseyev | 6 | 1 | 4 | ||||||||||||||||||
| R Bonadio | 4 | 6 | 5 | WC | T Skatov | 4 | 710 | 6 | |||||||||||||||||||
| Q | E Furness | 1 | 6 | 6 | Q | E Furness | 6 | 68 | 4 | ||||||||||||||||||
| C Gimeno Valero | 6 | 2 | 3 | Q | E Furness | 6 | 6 | ||||||||||||||||||||
 P Krstin | 6 | 6 | P Krstin | 3 | 1 | ||||||||||||||||||||||
| 2 | M Safwat | 4 | 0 | ||||||||||||||||||||||||
Grigor Dimitrov was the defending champion, but chose not to participate this year.
Guillermo García López won the title, defeating Jiří Veselý in the final, 7–6(7–5), 7–6(13–11).
Martin Kližan was the defending champion, but withdrew before the tournament began.
Thomaz Bellucci was the defending champion, but lost in the second round to Federico Delbonis.
Adrian Ungur was the defending champion but lost in the quarterfinals to Tim Pütz.
This was the first edition of the tournament.
Feliciano López was the defending champion, but lost in the second round to Yannick Hanfmann.
Marc Polmans was the defending champion but lost in the second round to Tristan Lamasine.
Yasutaka Uchiyama was the defending champion but chose not to defend his title.
Denis Istomin was the defending champion but lost in the third round to Federico Coria.
Lorenzo Sonego was the defending champion and successfully defended his title, defeating Alejandro Davidovich Fokina 6–2, 4–6, 7–6(8–6) in the final.
Andrea Collarini was the defending champion but lost in the first round to Marco Cecchinato.
Jozef Kovalík was the defending champion but lost in the quarterfinals to Carlos Taberner.
This was the first edition of the tournament.
Aslan Karatsev won his first ATP Tour singles title, defeating Lloyd Harris in the final, 6–3, 6–2 to win the men's singles tennis title at the 2021 Dubai Tennis Championships. Karatsev became the second wildcard in the tournament's history to win the men's singles title. Harris was the first qualifier to reach the final of the Dubai Tennis Championships.
Pablo Carreño Busta defeated Jaume Munar in the final, 6–1, 2–6, 6–4 to win the inaugural Men's Singles tennis title at the 2021 Andalucía Open. Notably, this was the first tournament in ATP history to feature 4 semifinalists from the same nation.
Thanasi Kokkinakis was the defending champion but chose not to defend his title.
Adam Pavlásek was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Alessandro Giannessi was the defending champion but chose not to defend his title.
Defending champion Carlos Alcaraz defeated Stefanos Tsitsipas in the final, 6–3, 6–4 to win the singles tennis title at the 2023 Barcelona Open. He did not lose a single set in the entire tournament.