Family name Mahmuddin (Mahmuddin 
) , throughout the world, is quite a rare surname. The last name Mahmuddin is characteristic of South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Indonesia, where it is a rare surname, and Singapore. Measured by absolute frequency, it is commonest in Indonesia, Malaysia, and India. Likewise, Mahmuddin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mahmuddin | Philippines, Singapore, India, Indonesia, Malaysia |