Cognomen Semka (Semka 
, Семка 
, Сёмка ) , in the world, is quite a rare family name. The cognomen Semka is characteristic of Tanzania, where it is a rare surname, Ukraine, and Russia. Very seldom, Semka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Semka | Russia, Tanzania, Greece, Poland, Croatia |
| Семка | Russia, Bulgaria, Belarus, Kazakhstan, Ukraine |
| Сёмка | Belarus, Russia, Kazakhstan |
| ryszard semka Polish architect, PL (b. 1925) |
|
|
| semka sokolović-bertok Croatian actress (1935–2008), BA (b. 1935) |
|
|
| piotr semka Polish journalist, PL (b. 1965) |
|