Family name ตืน (Tuen 
, ตืน 
) , in the entire world, is quite a rare cognomen. The family name ตืน is characteristic of British Virgin Islands, where it is quite a common surname, Hong Kong, where it is quite a rare surname, and Norway. Measured by absolute frequency, it most frequently occurs in Hong Kong, Malaysia, and China. Likewise, ตืน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tuen | Malaysia, Taiwan, Norway, China, Hong Kong |
| ตืน | Thailand |