| Doubles | |
|---|---|
| 2021 Almaty Challenger | |
| Champions |  Jesper de Jong  Vitaliy Sachko |
| Runners-up | Vladyslav Manafov  Evgenii Tiurnev |
| Score | 7–6(7–4), 6–1 |
Andrej Martin and Hans Podlipnik Castillo were the defending champions [1] but chose not to defend their title.
Jesper de Jong and Vitaliy Sachko won the title after defeating Vladyslav Manafov and Evgenii Tiurnev 7–6(7–4), 6–1 in the final.
Felipe Meligeni Alves / João Menezes (first round)
Brayden Schnur / 
Yang Tsung-hua (first round) Jesper de Jong / Vitaliy Sachko (champions)
Denis Istomin / 
Denis Yevseyev (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | F Meligeni Alves J Menezes | 3 | 0 | ||||||||||||||||||||||||
 M Bašić  N Serdarušić | 6 | 6 | M Bašić N Serdarušić | 6 | 77 | ||||||||||||||||||||||
 Z Bergs K Coppejans | 6 | 6 | Z Bergs K Coppejans | 3 | 63 | ||||||||||||||||||||||
| WC | Dostanbek Tashbulatov B Zhukayev | 3 | 2 | M Bašić N Serdarušić | 6 | 3 | [9] | ||||||||||||||||||||
| 4 | D Istomin D Yevseyev | 3 | 2 | V Manafov E Tiurnev | 4 | 6 | [11] | ||||||||||||||||||||
| V Manafov E Tiurnev | 6 | 6 | V Manafov E Tiurnev | 77 | 6 | ||||||||||||||||||||||
| WC | Yan Bondarevskiy G Lomakin | 6 | 65 | [10] |  D Kuzmanov  GM Moroni | 63 | 2 | ||||||||||||||||||||
| D Kuzmanov GM Moroni | 4 | 77 | [12] | V Manafov E Tiurnev | 64 | 1 | |||||||||||||||||||||
| WC |  C Gimeno Valero T Skatov | 7 | 2 | [6] | 3 | J de Jong V Sachko | 77 | 6 | |||||||||||||||||||
| A Menéndez Maceiras R Ortega Olmedo | 5 | 6 | [10] | A Menéndez Maceiras R Ortega Olmedo | 1 | 2 | |||||||||||||||||||||
| T Gabashvili L Giustino | 3 | 4 | 3 | J de Jong V Sachko | 6 | 6 | |||||||||||||||||||||
| 3 | J de Jong V Sachko | 6 | 6 | 3 | J de Jong V Sachko | 6 | 6 | ||||||||||||||||||||
| C-h Tseng T-l Wu | 4 | 6 | [8] |  MT Barrios Vera R Bonadio | 2 | 0 | |||||||||||||||||||||
| MT Barrios Vera R Bonadio | 6 | 2 | [10] | MT Barrios Vera R Bonadio | 77 | 5 | [10] | ||||||||||||||||||||
D Popko  M Safwat | 77 | 6 | D Popko M Safwat | 64 | 7 | [8] | |||||||||||||||||||||
| 2 | B Schnur T-h Yang | 64 | 3 | ||||||||||||||||||||||||
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