Surname Usuluddin (Usuluddin 
) , in all the world, is a rare cognomen. The last name Usuluddin is habitual in South-eastern Asia, particularly Malaysia, where it is a rare surname, and Indonesia, where it is a very rare surname. Very seldom, Usuluddin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Usuluddin | Malaysia, Philippines, Indonesia |