Cognomen Niyomjenka (Niyomjenka 
) , in the entire world, is a very rare last name. The last name Niyomjenka is habitual in Trinidad and Tobago, where it is quite a rare surname, and Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Niyomjenka | Trinidad and Tobago, Thailand |