Last name Tuất (Нгуен 
, Tuất 
) , all over the world, is a common family name. The cognomen Tuất is characteristic of Eastern Europe, particularly Belarus, where it is quite a common surname, Russia, where it is quite a rare surname, and Ukraine. Very seldom, Tuất is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Нгуен | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| Tuất | Vietnam |