2023 Tiburon Challenger

The 2023 Tiburon Challenger was a professional tennis tournament played on outdoor hard courts. It was the 15th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Tiburon, United States between October 2 and October 8, 2023.

2023 Tiburon Challenger
Date	2–8 October
Edition	15th
Surface	Hard
Location	Tiburon, United States
Champions
Singles
Zachary Svajda
Doubles
Luke Johnson / Skander Mansouri

Singles main draw entrants

Seeds

Country	Player	Rank1	Seed
USA	Alex Michelsen	110	1
USA	Nicolas Moreno de Alboran	156	2
USA	Zachary Svajda	167	3
USA	Denis Kudla	173	4
CAN	Alexis Galarneau	176	5
CAN	Vasek Pospisil	186	6
GBR	Ryan Peniston	197	7
USA	Tennys Sandgren	200	8

• ¹ Rankings are as of September 25, 2023.

Other entrants

The following players received wildcards into the singles main draw:

• Ozan Baris
• Stefan Dostanic
• Learner Tien

The following player received entry into the singles main draw using a protected ranking:

• Christian Harrison

The following players received entry from the qualifying draw:

• Nishesh Basavareddy
• Garrett Johns
• Cannon Kingsley
• Thai-Son Kwiatkowski
• Alfredo Perez
• Brayden Schnur

Champions

Singles

Main article: 2023 Tiburon Challenger – Singles

• Zachary Svajda def. Adam Walton 6–2, 6–2.

Doubles

Main article: 2023 Tiburon Challenger – Doubles

• Luke Johnson / Skander Mansouri def. William Blumberg / Luis David Martínez 6–2, 6–3.