Cognomen ยูจีน (Yuchin 
, Yujeen 
, Eujene 
) , worldwide, is a rare surname. The cognomen ยูจีน is characteristic of Taiwan, where it is quite a rare surname, Israel, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, it most frequently occurs in Taiwan, Nigeria, and China. More prevalently, ยูจีน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yuchin | China, United States, Australia, Japan, Taiwan |
| Yujeen | Thailand, India, South Korea |
| Eujene | Philippines, United States, Nigeria, India, Canada |
| ยูจีน | Thailand |