2023 Nonthaburi Challenger

The 2023 Nonthaburi Challenger was a professional tennis tournament played on hard courts. It was the 4th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Nonthaburi, Thailand from 2 to 7 January 2023.

Singles main-draw entrants

Seeds

¹ Rankings are as of 26 December 2022.

Other entrants

The following players received wildcards into the singles main draw:

The following players received entry from the qualifying draw:

Champions

Singles

Dennis Novak def. Wu Tung-lin 6–4, 6–4.

Doubles

Marek Gengel / Adam Pavlásek def. Robert Galloway / Hans Hach Verdugo 7–6, 6–4.