Surname Тієн-Дат (Тієн-Дат 
) , worldwide, is an extremely rare family name. Much more prevalently, Тієн-Дат is the forename as well as the last name. Parts of the name also exists independently as a first name Тієн, and a first name Дат.
| VARIANT | COUNTRY |
|---|---|
| Тієн-Дат | Ukraine |