Surname Sisljagic (Sisljagic 
) , in all the world, is a very rare last name. The family name Sisljagic is habitual in Croatia, where it is a very rare surname, Germany, and Canada, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Germany, the United States, and Croatia. Much less frequently, Sisljagic is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sisljagic | Germany, Croatia, Canada, United States |