Family name Ljuna (Ljuna 
) , around the world, is a very rare last name. The surname Ljuna is habitual in Croatia, where it is quite a rare surname, Germany, where it is an extremely rare surname, and the United Kingdom. Measured by absolute frequency, it is the most numerous in Croatia, Germany, and the United States. Much less frequently, Ljuna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ljuna | United Kingdom, United States, Germany, Croatia |