Last name Sostakas (Sostakas 
) , around the world, is a very rare cognomen. The cognomen Sostakas is habitual in Lithuania, where it is quite a rare surname, Canada, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Lithuania, the United States, and Canada. Much less frequently, Sostakas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sostakas | United Kingdom, Lithuania, United States, Canada |