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In all the world, Hoài (Hoai
, Hoài
) is quite a common unisex first name. The first name Hoài is characteristic of Macao, where it is quite a common female name, Vietnam, where it is quite a rare unisex name, and Australia, where it is a rare unisex name. In absolute terms, the name is most common in Vietnam, the United States, and Macao. Likewise, Hoài is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Hoai | Macao, Malaysia, Japan, Vietnam, United States |
| Hoài | Macao, Vietnam, Australia, United States, Germany |