Cognomen อุทธรณ์ (Appelt 
, อุทธรณ์ 
) , around the globe, is quite a common surname. The cognomen อุทธรณ์ is habitual in Germany, where it is quite a rare surname, Denmark, and Czechia. Not in comparison with a country's population, this name is the most popular in Germany, Brazil, and the United States. Very seldom, อุทธรณ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Appelt | Germany, Brazil, United States, Poland, Denmark |
| อุทธรณ์ | Thailand |