Cognomen ستو (Stu 
, ستو 
, Stew ) , in the world, is a common surname. The surname ستو is characteristic of Sudan, where it is quite a rare surname, Australia, and the United Kingdom. Not in comparison with a country's population, this name is the most popular in Sudan, the United States, and the United Kingdom. Also, ستو is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Stu, Stew | United Kingdom, Australia, United States, Canada, New Zealand |
| ستو | Saudi Arabia, Iraq, Sudan, Jordan, Egypt |
| Stow | United Kingdom, Australia, United States, South Africa, Canada |