Cognomen หวันอิ (Hwani 
, หวันอิ 
) , worldwide, is a very rare last name. The surname หวันอิ is habitual in Thailand, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. More frequently, หวันอิ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hwani | South Korea, United States, Nigeria |
| หวันอิ | Thailand |