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 |
|---|---|
| Stew, Stu | Australia, Canada, New Zealand, United Kingdom, United States |
| ستو | Iraq, Egypt, Jordan, Sudan, Saudi Arabia |
| Stow | Australia, South Africa, Canada, United Kingdom, United States |