Cognomen Smilka (Смилка 
, Smilka 
) , throughout the world, is a rare surname. The cognomen Smilka is characteristic of North Macedonia, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Denmark, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in North Macedonia, Bulgaria, and Russia. Likewise, Smilka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Смилка | Bulgaria, Kazakhstan, Russia, Ukraine |
| Smilka | Croatia, Denmark, North Macedonia, Canada, Mexico |
| ján smilka Czechoslovak member of Czechoslovak parliament and slovak nation politician (b. 1934) |
|