2023 Dutch Open – Singles

Tallon Griekspoor was the defending champion but chose not to defend his title.

Maximilian Marterer won the title after defeating Titouan Droguet 6–4, 6–2 in the final.

Seeds
• # 🇦🇷 Facundo Díaz Acosta (quarterfinals, retired)

• # 🇧🇷 Felipe Meligeni Alves (first round)

• # 🇬🇧 Jan Choinski (second round)

• # Jelle Sels (first round)

• # 🇩🇪 Maximilian Marterer (champion)

• # Jesper de Jong (first round)

• # 🇷🇴 Nicholas David Ionel (second round)

• # 🇫🇷 Titouan Droguet (final)