2023 Tiburon Challenger – Singles

Zachary Svajda was the defending champion and successfully defended his title after defeating Adam Walton 6–2, 6–2 in the final.

Seeds
• # 🇺🇸 Alex Michelsen (second round)

• # 🇺🇸 Nicolas Moreno de Alboran (first round)

• # 🇺🇸 Zachary Svajda (champion)

• # 🇺🇸 Denis Kudla (first round)

• # 🇨🇦 Alexis Galarneau (semifinals)

• # 🇨🇦 Vasek Pospisil (first round)

• # 🇬🇧 Ryan Peniston (second round)

• # 🇺🇸 Tennys Sandgren (second round, retired)