# 2021 Halle Open – Doubles

Kevin Krawietz and Horia Tecău defeated Félix Auger-Aliassime and Hubert Hurkacz in the final, 7–6$^{(7–4)}$, 6–4, to win the doubles tennis title at the 2021 Halle Open. It was their first title as a team.
Raven Klaasen and Michael Venus were the defending champions from when the event was last held in 2019, but they did not defend their title together. Klaasen played alongside Ben McLachlan but lost in the second round to Andrés Molteni and Guido Pella. Venus played alongside Tim Pütz but lost in the semifinals to Auger-Aliassime and Hurkacz.

## Seeds

* Ivan Dodig / Filip Polášek (second round)
* Łukasz Kubot / Édouard Roger-Vasselin (second round)
* Kevin Krawietz / Horia Tecău (champions)
* Wesley Koolhof / Jean-Julien Rojer (second round)
* Tim Pütz / Michael Venus (semifinals)
* Sander Gillé / Joran Vliegen (semifinals)
* Raven Klaasen / Ben McLachlan (second round)
* Oliver Marach / Aisam-ul-Haq Qureshi (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 5 | Tim PützMichael Venus | 6$^4$ | 2 | | | | |
| | Félix Auger-Aliassime Hubert Hurkacz | 7$^7$ | 6 | | | | |
| | Félix Auger-Aliassime Hubert Hurkacz | 7$^7$ | 6 | | Félix Auger-AliassimeHubert Hurkacz | 6$^4$ | 4 |
| | | | | 3 | Kevin Krawietz Horia Tecău | 7$^7$ | 6 |
| 3 | Kevin Krawietz Horia Tecău | 7$^8$ | 7 | 3 | Kevin Krawietz Horia Tecău | 7$^7$ | 6 |
| 6 | Sander GilléJoran Vliegen | 6$^6$ | 5 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | I DodigF Polášek | 7 | 1 | [6] | | | | | | | | |
| Q | D MasurR Molleker | 3 | 5 | | | A Krajicek S Querrey | 5 | 6 | [10] | | | | | | | | |
| | A Krajicek S Querrey | 6 | 7 | | | | | | | | A KrajicekS Querrey | 3 | 4 | | | | |
| | M DemolinerS González | 6$^5$ | 3 | | | | | | | 5 | T Pütz M Venus | 6 | 6 | | | | |
| LL | Y Hanfmann D Koepfer | 7$^7$ | 6 | | LL | Y HanfmannD Koepfer | 6$^2$ | 2 | | | | | | | | | |
| | | | | | 5 | T Pütz M Venus | 7$^7$ | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 5 | T PützM Venus | 6$^4$ | 2 |
| | | | | | | | | | | | | | | | F Auger-Aliassime H Hurkacz | 7$^7$ | 6 |
| | | | | | 4 | W KoolhofJ-J Rojer | 6$^5$ | 3 | | | | | | | | | |
| | K KhachanovA Rublev | 3 | 6 | [5] | | F Auger-Aliassime H Hurkacz | 7$^7$ | 6 | | | | | | | | | |
| | F Auger-Aliassime H Hurkacz | 6 | 4 | [10] | | | | | | | F Auger-Aliassime H Hurkacz | 6 | 6 | | | | |
| | J Erlich L Harris | 5 | 7$^7$ | [10] | | | | | | | J ErlichL Harris | 3 | 4 | | | | |
| | S BolelliM González | 7 | 6$^3$ | 5 | | J Erlich L Harris | 6 | 6 | | | | | | | | | |
| | | | | | 8 | O MarachA-u-H Qureshi | 3 | 3 | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 7 | R KlaasenB McLachlan | 6$^4$ | 6$^6$ | | | | | | | | |
| | A Molteni G Pella | 7$^8$ | 4 | [10] | | A Molteni G Pella | 7$^7$ | 7$^8$ | | | | | | | | |
| WC | D AltmaierD Stricker | 6$^6$ | 6 | [7] | | | | | | A MolteniG Pella | 4 | 2 | | | | |
| | T Brkić N Ćaćić | 4 | 6 | [10] | | | | | 3 | K Krawietz H Tecău | 6 | 6 | | | | |
| WC | D BrownJ-L Struff | 6 | 4 | [7] | | T BrkićN Ćaćić | 6$^3$ | 3 | | | | | | | | |
| | | | | | 3 | K Krawietz H Tecău | 7$^7$ | 6 | | | | | | | | |
| | | | | | | | | | | | | | 3 | K Krawietz H Tecău | 7$^8$ | 7 |
| | | | | | | | | | | | | | 6 | S GilléJ Vliegen | 6$^6$ | 5 |
| | | | | | 6 | S Gillé J Vliegen | 7$^7$ | 6 | | | | | | | | |
| | L Saville J Thompson | 6 | 6 | | | L SavilleJ Thompson | 6$^4$ | 3 | | | | | | | | |
| | F NielsenF Škugor | 3 | 4 | | | | | | 6 | S Gillé J Vliegen | 6 | 7$^7$ | | | | |
| | R Bopanna D Sharan | 7$^8$ | 6 | | | | | | | R BopannaD Sharan | 3 | 6$^3$ | | | | |
| | R AlbotN Basilashvili | 6$^6$ | 4 | | | R Bopanna D Sharan | 7$^{13}$ | 6 | | | | | | | | |
| | | | | | 2 | Ł KubotÉ Roger-Vasselin | 6$^{11}$ | 4 | | | | | | | | |

## Qualifying
### Seeds

* Evan King / Hunter Reese (first round)
* André Göransson / Sebastian Korda (first round)

### Qualifiers

* Daniel Masur / Rudolf Molleker

### Lucky losers

* Yannick Hanfmann / Dominik Koepfer

### Qualifying draw

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Evan KingHunter Reese | 4 | 6$^4$ | | | | | |
| WC | Daniel Masur Rudolf Molleker | 6 | 7$^7$ | | | | | |
| WC | Daniel Masur Rudolf Molleker | 6 | 7$^7$ | WC | Daniel Masur Rudolf Molleker | 5 | 7$^7$ | [10] |
| | | | | | Yannick HanfmannDominik Koepfer | 7 | 6$^5$ | [6] |
| | Yannick Hanfmann Dominik Koepfer | 6 | 7$^7$ | | Yannick HanfmannDominik Koepfer | 7 | 6$^5$ | [6] |
| 2 | André GöranssonSebastian Korda | 2 | 6$^3$ | | | | | |