Worldwide, صدر (صدر 
, Sadr 
) is quite a rare predominantly masculine, but very seldom girly first name. The forename صدر is characteristic of Western Asia, particularly Iraq, where it is quite a rare principally masculine, but scarcely girly name, Lebanon, where it is a rare masculine name, and Saudi Arabia. Measured by absolute frequency, it is the most numerous in Iraq, Pakistan, and India. More frequently, صدر is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| صدر | Iran, Iraq, Jordan, Palestinian Territory, Saudi Arabia |
| Sadr | Iran, Iraq, Egypt, Pakistan, United States |
| صدر الدین عارف PK (b. 1224) |
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| صدر الدين الشعيبي Khorasani-Iraqi faqih, IR (b. 1278) |
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صدر الدين الصدر iraqi ayatollah, IQ (b. 1881) |
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صدر الدين شرف الدين Iraqi-Lebanese poet and journalist, LB (b. 1912) |
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| صدر الدين فضل الله Ottoman Lebanese Islamic scholar and poet, LB (b. 1884) |
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| صدر الدين القبانجي Iraqi shia cleric, IQ (b. 1956) |
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| صدر اعظم Afghan Taliban politician and Islamic scholar, AF |
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