Surname Muhammad Najib (Muhammad Najib 
) , throughout the world, is a rare family name. The cognomen Muhammad Najib is habitual in South-eastern Asia, particularly Malaysia, where it is a rare surname, and Singapore, where it is a very rare surname. More frequently, Muhammad Najib is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Muhammad Najib | Malaysia, Singapore, Nigeria, Indonesia, Philippines |