Cognomen Gjerkaj (Gjerkaj 
) , in the world, is a very rare family name. The cognomen Gjerkaj is characteristic of Southern Europe, particularly Albania, where it is quite a rare surname, Greece, where it is a very rare surname, and Italy. Measured by absolute frequency, it most frequently occurs in Albania, Italy, and the United States. Much less frequently, Gjerkaj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gjerkaj | Italy, Greece, Albania, United States |