Surname Ерина (Erina 
, Ерина 
, Eryna 
) , in the world, is a common cognomen. The last name Ерина is habitual in Bulgaria, where it is quite a common surname, Latvia, where it is quite a rare surname, and Russia. Measured by absolute frequency, it is the most numerous in Russia, Indonesia, and Bulgaria. More prevalently, Ерина is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Erina | Indonesia, India, United States, Democratic Republic of the Congo, Italy |
| Ерина | Kazakhstan, Bulgaria, Belarus, Kyrgyzstan, Russia |
| Eryna | Brazil, Malaysia, Indonesia, United States, Democratic Republic of the Congo |
| Yerina | Brazil, India, United States, Nigeria, Indonesia |