Surname Spynu (Spynu 
, Спыну 
, Спину 
) , in the world, is quite a rare cognomen. The surname Spynu is characteristic of Estonia, where it is quite a rare surname, Ukraine, where it is a rare surname, and Belarus. Measured by absolute frequency, it is the most numerous in Eastern Europe, particularly Russia, Ukraine, and Belarus. Much less frequently, Spynu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Spynu | United States, Estonia, China, Russia |
| Спыну | Belarus, Kazakhstan, Russia |
| Спину | Ukraine, Russia |