2023 Upper Austria Open – Singles

Jurij Rodionov was the defending champion but chose not to defend his title.

Hamad Međedović won the title after defeating Filip Misolic 6–2, 6–7(5–7), 6–4 in the final.

Seeds
• # 🇦🇹 Dominic Thiem (semifinals)

• # 🇫🇷 Hugo Gaston (quarterfinals)

• # 🇦🇷 Facundo Bagnis (quarterfinals)

• # Gijs Brouwer (first round)

• # 🇦🇹 Filip Misolic (final)

• # 🇦🇹 Sebastian Ofner (semifinals)

• # Leandro Riedi (second round, retired)

• # 🇦🇹 Dennis Novak (quarterfinals)