Family name Серенай (Serenay 
, Серенай 
) , globally, is a very rare surname. The cognomen Серенай is characteristic of Western Asia, particularly Turkey, where it is a very rare surname. Much more frequently, Серенай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Serenay | Germany, France, United States, Turkey, Australia |
| Серенай | Ukraine |