2023 Nottingham Open – Men's singles

Andy Murray won the title of the men's singles tennis tournament at the 2023 Nottingham Open after defeating Arthur Cazaux 6–4, 6–4 in the final.

Dan Evans was the defending champion but chose not to defend his title.

Seeds
• # 🇬🇧 Andy Murray (champion)

• # 🇫🇷 Constant Lestienne (first round)

• # Nuno Borges (semifinals)

• # 🇦🇺 Aleksandar Vukic (first round)

• # 🇩🇪 Dominik Koepfer (semifinals)

• # 🇦🇺 Thanasi Kokkinakis (first round)

• # 🇺🇸 Aleksandar Kovacevic (first round)

• # Dominic Stricker (quarterfinals)