Family name Деонизий (Деонизий 
, Deonizy 
) , in the world, is a rare cognomen. The cognomen Деонизий is characteristic of Eastern Europe, particularly Poland, where it is a rare surname. Very seldom, Деонизий is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Деонизий | Kazakhstan, Russia |
| Deonizy | Poland |