| 2022 Nonthaburi Challenger III | |
|---|---|
| Date | 5 – 11 September |
| Edition | 3rd |
| Surface | Hard |
| Location | Nonthaburi, Thailand |
| Champions | |
| Singles | |
 Stuart Parker | |
| Doubles | |
 Chung Yun-seong /  Ajeet Rai | |
The 2022 Nonthaburi Challenger III was a professional tennis tournament played on hard courts. It was the 3rd edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Nonthaburi, Thailand from 5 to 11 September 2022.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 JPN | Yosuke Watanuki | 242 | 1 |
 MON | Valentin Vacherot | 271 | 2 |
 VIE | Lý Hoàng Nam | 290 | 3 |
| GBR | Billy Harris | 305 | 4 |
 GER | Nicola Kuhn | 317 | 5 |
| Alibek Kachmazov | 319 | 6 | |
 AUS | Dane Sweeny | 326 | 7 |
 IND | Prajnesh Gunneswaran | 329 | 8 |
The following players received wildcards into the singles main draw:
Yuttana Charoenphon Pruchya Isaro Pol WattanakulThe following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Gage Brymer Makoto Ochi Stuart Parker Ajeet Rai Kasidit Samrej Yuta Shimizu Stuart Parker def. 
Arthur Cazaux 6–4, 4–1 ret. Chung Yun-seong / Ajeet Rai def. 
Francis Alcantara / 
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