Surname Jankaj (Jankaj 
) , all around the world, is a rare last name. The surname Jankaj is habitual in Slovakia, where it is quite a rare surname, Czechia, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Jankaj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jankaj | India, United States, Czechia, Slovakia |