Family name Omrčen-Loko (Omrčen-Loko 
) , worldwide, is a very rare cognomen. The last name Omrčen-Loko is habitual in Southern Europe, particularly Croatia, where it is a rare surname. Parts of the name also exists independently as a last name Omrčen, and a last name Loko.
| VARIANT | COUNTRY |
|---|---|
| Omrčen-Loko | Croatia |