Cognomen ดอยซ์ (Doi 
, ดอยซ์ 
) , worldwide, is a common surname. The family name ดอยซ์ is habitual in Myanmar, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Israel, where it is a rare surname. In absolute terms, it is the most numerous in Myanmar, India, and Brazil. Likewise, ดอยซ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Doi | Indonesia, United States, India, Myanmar, Brazil |
| ดอยซ์ | Thailand |