Last name Jecius (Jecius 
) , in the world, is a very rare family name. The surname Jecius is habitual in Lithuania, where it is quite a rare surname, Norway, where it is a very rare surname, and Argentina. Not in comparison with a country's population, it is commonest in Lithuania, the United States, and Argentina.
| VARIANT | COUNTRY |
|---|---|
| Jecius | Lithuania, Norway, United States, Argentina |