2023 Saturn Oil Open – Singles

Lukáš Klein was the defending champion but lost in the second round to Ivan Gakhov.

Gakhov won the title after defeating Frederico Ferreira Silva 6–2, 5–7, 6–3 in the final.

Seeds
• # Pavel Kotov (semifinals)

• # 🇭🇺 Zsombor Piros (first round)

• # 🇧🇪 Zizou Bergs (withdrew)

• # 🇸🇰 Lukáš Klein (second round)

• # 🇦🇹 Filip Misolic (first round)

• # 🇸🇰 Jozef Kovalík (first round)

• # 🇯🇵 Kaichi Uchida (first round)

• # Jelle Sels (first round)