2021 Hamburg European Open
The 2021 Hamburg European Open was a combined men's and women's tennis tournament played on outdoor clay courts. It was the 115th edition of the event for the men and the 19th edition for the women, after last tournament being held in 2002. The tournament was classified as a WTA 250 tournament on the 2021 WTA Tour and as an ATP Tour 500 series on the 2021 ATP Tour. The tournament took place at the Am Rothenbaum in Hamburg, Germany between 6 and 18 July 2021. The event was scheduled a week earlier than the usual late July date to avoid scheduling conflicts with the 2020 Summer Olympics.
Champions
Men's singles
Pablo Carreño Busta def. Filip Krajinović, 6–2, 6–4Women's singles
Elena-Gabriela Ruse def. Andrea Petkovic, 7–6, 6–4This was Ruse's maiden WTA Tour singles title.
Men's doubles
Tim Pütz / Michael Venus def. Kevin Krawietz / Horia Tecău 6–3, 6–7, .Women's doubles
Jasmine Paolini / Jil Teichmann def. Astra Sharma / Rosalie van der Hoek 6–0, 6–4Points and prize money
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q2 | Q1 |
| Singles | €96,035 | €71,000 | €50,600 | €34,500 | €21,730 | €12,650 | €5,850 | €3,100 |
| Doubles* | €33,180 | €24,970 | €17,960 | €11,820 | €7,450 |
*per team
ATP singles main draw entrants
Seeds
1 Rankings are as of 28 June 2021.Other entrants
The following players received wildcards into the main draw:The following players received entry from the qualifying draw:
- Maximilian Marterer
- Alex Molčan
- Thiago Seyboth Wild
- Carlos Taberner
- Juan Pablo Varillas
- Zhang Zhizhen
Withdrawals
;Before the tournament- Pablo Andújar → replaced by Sumit Nagal
- Félix Auger-Aliassime → replaced by Lucas Pouille
- Aljaž Bedene → replaced by Sebastián Báez
- Márton Fucsovics → replaced by Gianluca Mager
- Aslan Karatsev → replaced by Corentin Moutet
- Lorenzo Sonego → replaced by Ričardas Berankis
ATP doubles main draw entrants
Seeds
- 1 Rankings are as of 28 June 2021.
Other entrants
The following pairs received wildcards into the doubles main draw:The following pair received entry using protected ranking:
The following pair received entry from the qualifying draw:
The following pair received entry as lucky losers:
Withdrawals
;Before the tournament- Luke Bambridge / Dominic Inglot → replaced by Ruben Gonzales / Hunter Johnson
- Simone Bolelli / Máximo González → replaced by Ivan Sabanov / Matej Sabanov
- Sander Gillé / Joran Vliegen → replaced by Sander Gillé / Divij Sharan
- Marcel Granollers / Horacio Zeballos → replaced by James Cerretani / Hans Hach Verdugo
- Oliver Marach / Philipp Oswald → replaced by N.Sriram Balaji / Luca Margaroli
WTA singles main draw entrants
Seeds
1 Rankings are as of 28 June 2021.Other entrants
The following players received wildcards into the main draw:The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Withdrawals
;Before the tournament- Paula Badosa → replaced by Kristýna Plíšková
- Sorana Cîrstea → replaced by Irina Bara
- Alizé Cornet → replaced by Kristína Kučová
- Varvara Gracheva → replaced by Andrea Petkovic
- Tereza Martincová → replaced by Ana Konjuh
- Laura Siegemund → replaced by Ysaline Bonaventure
- Sara Sorribes Tormo → replaced by Astra Sharma
- Patricia Maria Țig → replaced by Magdalena Fręch
- Zhang Shuai → replaced by Anna-Lena Friedsam
WTA doubles main draw entrants
Seeds
- 1 Rankings are as of 28 June 2021.