Cognomen Горькин (Gorkin 
, Горькин 
) , throughout the world, is a rare surname. The cognomen Горькин is characteristic of Estonia, where it is a rare surname, Russia, and Argentina, where it is a very rare surname. In absolute terms, it is the most numerous in Russia, the United States, and Argentina. Very seldom, Горькин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gorkin | Russia, Estonia, United States, Argentina, Venezuela |
| Горькин | Kazakhstan, Russia |