2023 Hamburg European Open

The 2023 Hamburg European Open was a combined men's and women's tennis tournament played on outdoor clay courts. It was the 117th edition of the event for the men and the 21st edition for the women. The tournament was classified as an ATP Tour 500 series on the 2023 ATP Tour (called the Hamburg Open) and as a WTA 250 tournament on the 2023 WTA Tour. The tournament took place at Am Rothenbaum in Hamburg, Germany between 23 and 30 July 2023.

Men's singles

 * 🇩🇪 Alexander Zverev def. 🇷🇸 Laslo Djere, 7–5, 6–3

Women's singles

 * Arantxa Rus def. 🇩🇪 Noma Noha Akugue 6–0, 7–6(7–3)

Men's doubles

 * 🇩🇪 Kevin Krawietz / 🇩🇪 Tim Pütz def. 🇧🇪 Sander Gillé / 🇧🇪 Joran Vliegen, 7–6(7–4), 6–3

Women's doubles

 * 🇰🇿 Anna Danilina / Alexandra Panova def. 🇨🇿 Miriam Kolodziejová / 🇺🇸 Angela Kulikov 6–4, 6–2

Seeds

 * Rankings are as of 17 July 2023.

Other entrants
The following players received wildcards into the main draw:
 * 🇩🇪 Maximilian Marterer
 * 🇩🇪 Rudolf Molleker
 * Andrey Rublev

The following players received entry using a protected ranking:
 * 🇧🇴 Hugo Dellien
 * 🇦🇷 Guido Pella

The following players received entry from the qualifying draw:
 * 🇬🇧 Jan Choinski
 * Cristian Garín
 * 🇧🇷 Thiago Seyboth Wild
 * 🇸🇪 Elias Ymer

The following players received entry as lucky losers:
 * 🇨🇴 Daniel Elahi Galán
 * 🇸🇰 Jozef Kovalík
 * 🇧🇷 Thiago Monteiro

Withdrawals

 * Aslan Karatsev → replaced by 🇫🇷 Luca Van Assche
 * 🇫🇮 Emil Ruusuvuori → replaced by 🇨🇴 Daniel Elahi Galán
 * 🇩🇪 Jan-Lennard Struff → replaced by 🇦🇷 Guido Pella
 * Botic van de Zandschulp → replaced by 🇧🇷 Thiago Monteiro
 * 🇵🇪 Juan Pablo Varillas → replaced by 🇸🇰 Jozef Kovalík
 * 🇸🇪 Mikael Ymer → replaced by 🇧🇴 Hugo Dellien

Seeds

 * Rankings are as of 17 July 2023.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇩🇪 Constantin Frantzen / 🇩🇪 Hendrik Jebens
 * 🇩🇪 Rudolf Molleker / 🇩🇪 Max Hans Rehberg

The following pair received entry from the qualifying draw:
 * 🇩🇪 Marvin Möller / 🇩🇪 Marko Topo

The following pair received entry as lucky losers:
 * 🇧🇴 Boris Arias / 🇧🇴 Federico Zeballos

Withdrawals

 * 🇦🇷 Máximo González / 🇦🇷 Andrés Molteni → replaced by 🇧🇴 Hugo Dellien / 🇦🇷 Guido Pella
 * 🇪🇸 Marcel Granollers / 🇦🇷 Horacio Zeballos → replaced by 🇧🇴 Boris Arias / 🇧🇴 Federico Zeballos
 * Wesley Koolhof / 🇬🇧 Neal Skupski → replaced by 🇦🇷 Sebastián Báez / 🇪🇸 Bernabé Zapata Miralles
 * Hugo Nys / 🇵🇱 Jan Zieliński → replaced by 🇷🇸 Nikola Ćaćić / 🇷🇴 Victor Vlad Cornea

Seeds

 * Rankings are as of 17 July 2023.

Other entrants
The following players received wildcards into the main draw:
 * 🇩🇪 Jule Niemeier
 * 🇩🇪 Noma Noha Akugue
 * 🇩🇪 Ella Seidel

The following player received entry as a special exempt:
 * Maria Timofeeva

The following players received entry from the qualifying draw:
 * 🇷🇴 Miriam Bulgaru
 * 🇫🇷 Elsa Jacquemot
 * Kaja Juvan
 * Polina Kudermetova
 * 🇦🇺 Daria Saville
 * 🇹🇷 Zeynep Sönmez

Withdrawals

 * 🇷🇴 Sorana Cirstea → replaced by 🇩🇪 Tamara Korpatsch
 * 🇩🇪 Anna-Lena Friedsam → replaced by 🇧🇷 Laura Pigossi
 * Anna Kalinskaya → replaced by 🇦🇷 María Lourdes Carlé
 * Daria Kasatkina → replaced by 🇦🇺 Storm Hunter
 * 🇺🇸 Elizabeth Mandlik → replaced by 🇧🇬 Viktoriya Tomova
 * 🇺🇸 Alycia Parks → replaced by 🇪🇪 Kaia Kanepi
 * Anastasia Potapova → replaced by 🇩🇪 Eva Lys

Seeds

 * Rankings are as of 17 July 2023.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇦🇹 Melanie Klaffner / 🇦🇹 Sinja Kraus
 * 🇩🇪 Noma Noha Akugue / 🇩🇪 Ella Seidel