Last name Jellonek (Jellonek 
) , in all the world, is a very rare cognomen. The family name Jellonek is habitual in Western Europe, particularly Germany, where it is a very rare surname. Also, Jellonek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jellonek | Germany, Poland |
| andrzej jellonek Polish physicist, PL (b. 1907) |
|