2023 Hamburg European Open – Women's singles

Arantxa Rus defeated Noma Noha Akugue in the final, 6–0, 7–6(7–3) to win the women's singles title at the 2023 Hamburg European Open. It was her first WTA Tour title. Rus, at 32 years of age, became the oldest first-time WTA champion in the last 40 years. She was playing in her 126th tour-level main-draw. It was Noha Akugue's first WTA Tour main draw singles appearance. The final was the first between two left-handed players since the 2018 Prague Open.

Bernarda Pera was the defending champion, but lost to Diana Shnaider in the quarterfinals.

Seeds
• # Donna Vekić (first round)

• #🇪🇬 Mayar Sherif (first round)

• #🇺🇸 Bernarda Pera (quarterfinals)

• #🇮🇹 Jasmine Paolini (first round)

• #🇦🇹 Julia Grabher (second round)

• #🇰🇿 Yulia Putintseva (second round)

• # Arantxa Rus (champion)

• #🇨🇴 Camila Osorio (second round)

Seeds
• # Polina Kudermetova (qualified)

• # Kaja Juvan (qualified)

• # 🇨🇴 Emiliana Arango (qualifying competition)

• # 🇮🇹 Nuria Brancaccio (qualifying competition)

• # 🇫🇷 Elsa Jacquemot (qualified)

• # 🇦🇹 Sinja Kraus (qualifying competition)

• # Despina Papamichail (qualifying competition)

• # 🇹🇷 Zeynep Sönmez (qualified)

• # Ekaterina Makarova (qualifying competition)

• # 🇨🇿 Barbora Palicová (first round)

• # 🇩🇪 Mona Barthel (first round)

• # 🇷🇴 Miriam Bulgaru (qualified)

Qualifiers
• # Polina Kudermetova

• # Kaja Juvan

• # 🇷🇴 Miriam Bulgaru

• # 🇹🇷 Zeynep Sönmez

• # 🇫🇷 Elsa Jacquemot

• # 🇦🇺 Daria Saville