Surname Сонечка (Сонечка 
, Sonechka 
, Sonetchka ) , in all the world, is an extremely rare cognomen. The surname Сонечка is characteristic of Eastern Europe, particularly Russia, where it is an extremely rare surname. Much more frequently, Сонечка is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Сонечка | Russia |
| Sonechka | United States, Russia |
| Sonetchka | United States |
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