The 2021 Bad Homburg Open was a women's tennis tournament played on outdoor grass courts. It was the 1st edition of the Bad Homburg Open, and part of the WTA 250 series of the 2021 WTA Tour. The event took place at the TC Bad Homburg in Bad Homburg, Germany, from 20 until 26 June 2021.
Bad Homburg is historically significant in the development and popularity of tennis in Europe.[1]
See main article: 2021 Bad Homburg Open – Singles.
Kateřina Siniaková, 6–3, 6–2.See main article: 2021 Bad Homburg Open – Doubles.
Nadiia Kichenok / 
Raluca Olaru, 6–3, 6–1.| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Petra Kvitová | 11 | 1 | ||
 Belarus | Victoria Azarenka | 16 | 2 | |
| Jessica Pegula | 26 | 3 | ||
| Angelique Kerber | 27 | 4 | ||
 Argentina | Nadia Podoroska | 42 | 5 | |
| Romania | Sorana Cîrstea | 45 | 6 | |
 Spain | Sara Sorribes Tormo | 53 | 7 | |
| Laura Siegemund | 55 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
Yuliya Hatouka
Katarzyna Piter
Ekaterina YashinaThe following player received entry as a lucky loser:
Irina-Camelia Begu → replaced by Andrea Petkovic
Jennifer Brady → replaced by Varvara Gracheva
Caroline Garcia → replaced by 
Misaki Doi Barbora Krejčíková → replaced by Tamara Korpatsch Sloane Stephens → replaced by 
Riya Bhatia
Alison Van Uytvanck → replaced by 
Martina Trevisan Victoria Azarenka (back injury)| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| Darija Jurak | Andreja Klepač | 57 | 1 | ||
| Ukraine | Nadiia Kichenok | Romania | Raluca Olaru | 85 | 2 |
| Russian Federation | Anna Blinkova | Arantxa Rus | 126 | 3 | |
| Vivian Heisen | Czech Republic | Květa Peschke | 138 | 4 | |
The following pairs received wildcards into the doubles main draw:
Amanda Anisimova / Sloane Stephens (Stephens – right foot injury)