Family name Drlja (Drlja 
) , globally, is a very rare surname. The surname Drlja is habitual in Croatia, where it is quite a rare surname, Australia, where it is a very rare surname, and Germany. In absolute terms, it most frequently occurs in Croatia, Germany, and the United States. Much less frequently, Drlja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Drlja | Australia, United States, Germany, Croatia |