2023 Nonthaburi Challenger III

The 2023 Nonthaburi Challenger III was a professional tennis tournament played on hard courts. It was the 6th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Nonthaburi, Thailand from 16 to 22 January 2023.

Seeds

 * 1 Rankings are as of 9 January 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇹🇭 Yuttana Charoenphon
 * 🇹🇭 Jirat Navasirisomboon
 * 🇹🇭 Kasidit Samrej

The following players received entry into the singles main draw as alternates:
 * 🇮🇹 Stefano Travaglia
 * 🇰🇿 Beibit Zhukayev

The following players received entry from the qualifying draw:
 * 🇫🇷 Arthur Cazaux
 * Evgeny Donskoy
 * 🇨🇿 Jakub Menšík
 * 🇯🇵 Shintaro Mochizuki
 * 🇨🇿 Dominik Palán
 * 🇬🇧 Stuart Parker

The following player received entry as a lucky loser:
 * 🇮🇹 Giovanni Fonio

Singles

 * 🇯🇵 Sho Shimabukuro def. 🇫🇷 Arthur Cazaux 6–2, 7–5.

Doubles

 * 🇰🇷 Nam Ji-sung / 🇰🇷 Song Min-kyu def. 🇬🇧 Jan Choinski / 🇬🇧 Stuart Parker 6–4, 6–4.