Cognomen Nguyengia (Nguyengia 
) , worldwide, is a very rare family name. The surname Nguyengia is habitual in Vietnam, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Nguyengia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nguyengia | United States, Vietnam |