Cognomen Катка (Катка 
, Kadka 
) , all over the world, is a rare family name. The surname Катка is characteristic of Bulgaria, where it is a rare surname, Saudi Arabia, and Malaysia, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in India, Saudi Arabia, and Malaysia. Much less frequently, Катка is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Катка | Kazakhstan, Russia, Bulgaria |
| Kadka | United Kingdom, India, Malaysia, Saudi Arabia |