2023 Ilkley Trophy – Men's singles

Zizou Bergs was the defending champion but lost in the second round to Denis Kudla.

Jason Kubler won the title after defeating Sebastian Ofner 6–4, 6–4 in the final.

Seeds
• # Nuno Borges (first round)

• # 🇸🇰 Alex Molčan (withdrew)

• # 🇦🇹 Sebastian Ofner (final)

• # 🇦🇺 Jason Kubler (champion)

• # 🇦🇹 Jurij Rodionov (first round)

• # Dominic Stricker (first round, retired)

• # 🇺🇸 Aleksandar Kovacevic (first round)

• # 🇯🇵 Yosuke Watanuki (first round)