Surname Sainuddin (Sainuddin 
) , worldwide, is quite a rare family name. The surname Sainuddin is habitual in Malaysia, where it is quite a rare surname, Bahrain, where it is a rare surname, and Indonesia. In absolute terms, it is commonest in Indonesia, Malaysia, and India. Likewise, Sainuddin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sainuddin | United Arab Emirates, India, Indonesia, Malaysia, Saudi Arabia |