Family name เทน (Then 
, เทน 
) , worldwide, is a common last name. The last name เทน is habitual in the Dominican Republic, where it is quite a common surname, Malaysia, and Brunei, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Indonesia, Malaysia, and the Dominican Republic. Also, เทน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Then | Indonesia, Myanmar, Dominican Republic, Germany, Malaysia |
| เทน | Thailand |