2023 Schwaben Open – Singles

Yannick Hanfmann was the defending champion but chose not to defend his title.

Carlos Taberner won the title after defeating Oriol Roca Batalla 6–4, 6–4 in the final.

Seeds
• # 🇦🇷 Hernán Casanova (first round, retired)

• # Benjamin Hassan (quarterfinals, retired)

• # 🇦🇷 Román Andrés Burruchaga (first round)

• # 🇨🇦 Steven Diez (second round)

• # 🇫🇷 Manuel Guinard (first round, retired)

• # 🇦🇷 Santiago Rodríguez Taverna (first round)

• # 🇩🇪 Timo Stodder (semifinals)

• # 🇪🇸 Nikolás Sánchez Izquierdo (first round)