Last name الديلمي (الديلمي 
) , across the world, is quite a common surname. The cognomen الديلمي is characteristic of Western Asia, particularly Yemen, where it is quite a common surname, Saudi Arabia, where it is quite a rare surname, and Jordan, where it is a rare surname. Measured by absolute frequency, the name is most common in Western Asia, particularly Yemen, Saudi Arabia, and Iraq.
| VARIANT | COUNTRY |
|---|---|
| الديلمي | Jordan, Syria, Saudi Arabia, Iraq, Yemen |
Al-Dailami, and Aldylmy
| يوحنا الديلمي Syriac saint, IQ (b. 660) |
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| عبد الوهَّاب بن لُطف الديلمي Yemeni politician, YE (b. 1938) |
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| يحيى بن حسين الديلمي Yemeni Islamic scholar, YE (b. 1961) |
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| إبراهيم الديلمي Yemeni writer, YE (b. 1976) |
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| فيروز الديلمي Sahaba of Muhammad, YE |
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| أبو الفتح الناصر الديلمي Zaydi imam of Yemen, YE |
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