In the entire world, Домальчук-Йонассон (Домальчук-Йонассон 
) is an extremely rare unknown gender given name. Predominantly, Домальчук-Йонассон is the last name as well as the forename. Parts of the name also exists independently as a last name Домальчук, and a last name Йонассон.
| VARIANT | COUNTRY |
|---|---|
| Домальчук-Йонассон | Ukraine |