Cognomen اعلم (اعلم 
) , worldwide, is a rare surname. The cognomen اعلم is habitual in Egypt, where it is a rare surname, Iran, and Iraq. Much less frequently, اعلم is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| اعلم | Saudi Arabia, Iraq, Iran, Egypt |
| مظفر اعلم Iranian general and politician, IR (b. 1882) |
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| جمشید اعلم Iranian politician and physician, IR (b. 1901) |
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| هوشنگ اعلم IR (b. 1928) |
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| امیرجلالالدین اعلم Iranian writer and translator, IR (b. 1941) |
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