2023 Platzmann-Sauerland Open – Singles

Hamad Medjedovic was the defending champion but chose not to defend his title.

Duje Ajduković won the title after defeating Hugo Dellien 7–5, 6–4 in the final.

Seeds
• # 🇭🇺 Fábián Marozsán (second round)

• # 🇪🇸 Pedro Martínez (quarterfinals)

• # 🇫🇷 Benoît Paire (semifinals)

• # 🇰🇿 Timofey Skatov (second round)

• # 🇩🇪 Maximilian Marterer (first round)

• # 🇮🇹 Raúl Brancaccio (semifinals, retired)

• # 🇬🇧 Jan Choinski (first round)

• # 🇧🇴 Hugo Dellien (final)