Surname Stui (Stui 
, Стуй 
) , across the world, is a very rare cognomen. The cognomen Stui is habitual in Netherlands, where it is a rare surname, Ukraine, and Kyrgyzstan, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Ukraine, Netherlands, and Russia. Also, Stui is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Stui | Guatemala, United States, Brazil, Netherlands |
| Стуй | Kyrgyzstan, Ukraine, Russia |