Cognomen Ustal (Ustal 
, Усталь 
) , around the world, is a very rare family name. The last name Ustal is characteristic of Estonia, where it is quite a rare surname, Russia, where it is a very rare surname, and Kazakhstan. In absolute terms, it is commonest in Russia, Estonia, and Philippines. Much less frequently, Ustal is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ustal | Estonia, Philippines, Turkey, India, France |
| Усталь | Kazakhstan, Russia |
| mari ustal Estonian rower, EE (b. 1937) |
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| lucas ustal |
|