2026 Nonthaburi Challenger


The 2026 Nonthaburi Challenger was a professional tennis tournament played on hard courts. It was the 14th edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Nonthaburi, Thailand from 5 to 10 January 2026.

Singles main-draw entrants

Seeds

1 Rankings are as of 29 December 2025.

Other entrants

The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:

Champions

Singles

Rio Noguchi def. Marek Gengel 6–3, 6–4.

Doubles

Daniel Cukierman / Joel Schwärzler def. Hsieh Cheng-peng / Huang Tsung-hao 6–3, 6–1.