Family name Hylarion (Hylarion 
) , worldwide, is an extremely rare surname. The family name Hylarion is characteristic of Latin America and the Caribbean, particularly Brazil, where it is an extremely rare surname. Predominantly, Hylarion is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hylarion | South Africa, United States, France, Brazil, Democratic Republic of the Congo |