Cognomen Najumuddin (Najumuddin 
) , worldwide, is a rare last name. The surname Najumuddin is habitual in United Arab Emirates, where it is a rare surname, Malaysia, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, Najumuddin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Najumuddin | United Arab Emirates, India, Malaysia |