Around the world, Sadiah (Sadiah 
) is quite a rare principally feminine, but scarcely male forename. The forename Sadiah is characteristic of South-eastern Asia, particularly Brunei, where it is quite a rare female name, Singapore, where it is a rare female name, and Indonesia, where it is a rare principally feminine, but very infrequently boy's name. Measured by absolute frequency, it is the most numerous in Indonesia, Malaysia, and Nigeria. More prevalently, Sadiah is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sadiah | Malaysia, Nigeria, Indonesia, Singapore, Saudi Arabia |