Last name Нагаы (Nagay 
, Нагаы 
) , all over the world, is a rare cognomen. The cognomen Нагаы is characteristic of Eastern Europe, particularly Hungary, where it is a rare surname, Poland, and Bulgaria. Not in comparison with a country's population, it is the most numerous in Poland, Brazil, and Egypt. Also, Нагаы is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nagay | Japan, Egypt, Poland, India, Brazil |
| Нагаы | Russia |