Throughout the world, Saiuddin (Saiuddin 
) is a rare principally male, but very infrequently feminine given name. The first name Saiuddin is characteristic of Southern Asia, particularly India, where it is a very rare principally boy's, but very infrequently female name. Much less frequently, Saiuddin is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Saiuddin | India |