Surname Hyacinthia (Hyacinthia 
) , around the globe, is an extremely rare last name. The family name Hyacinthia is characteristic of Sub-Saharan Africa, particularly Nigeria, where it is an extremely rare surname. Predominantly, Hyacinthia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hyacinthia | South Africa, Nigeria, United States, Philippines, Democratic Republic of the Congo |