Family name Ladjan (Ladjan 
) , in the entire world, is a rare cognomen. The family name Ladjan is habitual in Algeria, where it is a rare surname, Philippines, where it is a very rare surname, and Indonesia. Very seldom, Ladjan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ladjan | Indonesia, Algeria, Spain, Malaysia, Philippines |