Cognomen Nguyênn (Nguyênn 
) , all around the world, is a very rare surname. The last name Nguyênn is habitual in South-eastern Asia, particularly Vietnam, where it is a very rare surname. Much less frequently, Nguyênn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nguyênn | Vietnam |