| Doubles | |
|---|---|
| 2021 Wolffkran Open | |
| Champions |  Andre Begemann  Igor Zelenay |
| Runners-up |  Marek Gengel Tomáš Macháč |
| Score | 6–2, 6–4 |
Andre Begemann and David Pel were the defending champions [1] but only Begemann chose to defend his title, partnering Igor Zelenay.
Begemann successfully defended his title after defeating Marek Gengel and Tomáš Macháč 6–2, 6–4 in the final.
Roman Jebavý / 
Frederik Nielsen (first round)
Szymon Walków / Jan Zieliński (semifinals)
Antonio Šančić / 
Artem Sitak (semifinals) Andre Begemann / Igor Zelenay (champions)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | R Jebavý F Nielsen | 2 | 4 | ||||||||||||||||||||||||
| Alt | M Gengel T Macháč | 6 | 6 | Alt | M Gengel T Macháč | 77 | 6 | ||||||||||||||||||||
 R Haase Mats Hermans | 6 | 6 | R Haase M Hermans | 65 | 2 | ||||||||||||||||||||||
 A Çelikbilek C İlkel | 4 | 4 | Alt | M Gengel T Macháč | 77 | 2 | [10] | ||||||||||||||||||||
| 3 | A Šančić A Sitak | 77 | 5 | [10] | 3 | A Šančić A Sitak | 65 | 6 | [7] | ||||||||||||||||||
 A Cozbinov  M Cressy | 64 | 7 | [4] | 3 | A Šančić A Sitak | 6 | 6 | ||||||||||||||||||||
 VV Cornea  R Ramanathan | 6 | 3 | [10] | VV Cornea R Ramanathan | 4 | 4 | |||||||||||||||||||||
| WC | T Sandkaulen H Squire | 3 | 6 | [7] | Alt | M Gengel T Macháč | 2 | 4 | |||||||||||||||||||
| WC | P Florig MH Rehberg | 4 | 3 | 4 | A Begemann I Zelenay | 6 | 6 | ||||||||||||||||||||
M Marterer  V Sachko | 6 | 6 | M Marterer V Sachko | 4 | 64 | ||||||||||||||||||||||
 M-A Hüsler L Margaroli | 4 | 62 | 4 | A Begemann I Zelenay | 6 | 77 | |||||||||||||||||||||
| 4 | A Begemann I Zelenay | 6 | 77 | 4 | A Begemann I Zelenay | 6 | 1 | [10] | |||||||||||||||||||
| WC | Marko Krickovic Michael Weindl | 62 | 4 | 2 | S Walków J Zieliński | 4 | 6 | [7] | |||||||||||||||||||
J Lenz  T-S Weissborn | 77 | 6 | J Lenz T-S Weissborn | 63 | 4 | ||||||||||||||||||||||
| J Nedunchezhiyan P Raja | 5 | 610 | 2 | S Walków J Zieliński | 77 | 6 | |||||||||||||||||||||
| 2 | S Walków J Zieliński | 7 | 712 | ||||||||||||||||||||||||
Philipp Marx and Igor Zelenay were the defending champions, but Zelenay did not participate.
Marx partnered with Michael Kohlmann, however they were eliminated by their compatriots Martin Emmrich and Andre Begemann in the quarterfinals.
Alexander Peya and Martin Slanar won in the final 7–6(1), 6–3, over Rameez Junaid and Frank Moser.
Andre Begemann and Matthew Ebden were the defending champions but decided not to participate.
Daniel Muñoz-de la Nava and Rubén Ramírez Hidalgo won the title, defeating Mate Pavić and Franko Škugor 6–2, 7–6(10) in the final.
Scott Lipsky and Rajeev Ram were the defending champions but Lipsky decided not to participate.
Ram plays alongside Dustin Brown, losing in the first round.
Andre Begemann and Alexandre Kudryavtsev won the title against James Cerretani and Adil Shamasdin 6–3, 3–6, [11–9].
Federico Delbonis and Renzo Olivo were the defending champions but Delbonis decided not to participate.
Olivo played alongside Dane Propoggia.
Philipp Marx and Florin Mergea won the title, defeating Colin Ebelthite and Jaroslav Pospíšil 6–4, 4–6, [10–4] in the final.
Harri Heliövaara and Denys Molchanov were the defending champions but Heliövaara decided not to participate.
Molchanov played alongside Uladzimir Ignatik.
Andre Begemann and Martin Emmrich won the title by defeating Rameez Junaid and Frank Moser 6–7(2–7), 7–6(7–2), [10–8] in the final.
Tomasz Bednarek and Mateusz Kowalczyk were the defending champions, and won the title again by beating Andreas Siljeström and Igor Zelenay 6–2, 7–6(7–4).
Ken Skupski and Neal Skupski were the defending champions, but lost in the semifinals to Tomasz Bednarek and Igor Zelenay.
Andre Begemann and Tim Pütz were the defending champion, but Begemann decided not to compete this year. Pütz played alongside Dominik Meffert and reached the final.
Andre Begemann and Lukáš Rosol were the defending champions, but they did not participate this year. When Prostějov tournament started, Rosol was still in play in doubles competition at French Open.
Andrej Martin and Igor Zelenay were the defending champions but only Zelenay returned, partnering Hans Podlipnik. Zelenay lost in the semifinals to Andre Begemann and Aliaksandr Bury.
Luke Saville and Jordan Thompson were the defending champions but chose not to defend their title.
Rameez Junaid and Andreas Siljeström were the defending champions but only Junaid chose to defend his title, partnering Tim Pütz, but withdrew before the tournament began.
This was the first edition of the tournament.
Andre Begemann and Aliaksandr Bury were the defending champions but chose not to defend their title.
Roman Jebavý and Antonio Šančić were the defending champions but only Jebavý chose to defend his title, partnering Florin Mergea. Jebavý lost in the first round to Denys Molchanov and Igor Zelenay.
Guillermo Durán and Andrés Molteni were the defending champions but chose not to defend their title.
Julian Knowle and Igor Zelenay were the defending champions but only Zelenay chose to defend his title, partnering Denys Molchanov. Zelenay lost in the quarterfinals to Andre Begemann and Dustin Brown.
Rameez Junaid and David Pel were the defending champions, but only Junaid chose to defend his title, partnering Jozef Kovalík. Junaid lost in the quarterfinals to Andre Begemann and Fabrice Martin.
This was the first edition of the tournament.
Andre Begemann and Igor Zelenay were the defending champions but chose not to defend their title.