Cognomen Erfan (عرفان 
, Erfan 
, Эрфан 
) , around the world, is a common last name. The cognomen Erfan is habitual in Afghanistan, where it is quite a rare surname, Egypt, and Saudi Arabia. Not in comparison with a country's population, this name is the most popular in Egypt, Bangladesh, and Indonesia. More prevalently, Erfan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| عرفان | Saudi Arabia, Iran, Afghanistan, Iraq, Egypt |
| Erfan | India, Iran, Bangladesh, Indonesia, Egypt |
| Эрфан | Russia, Kazakhstan |
| Ерфан | Ukraine, Russia, Kazakhstan |
| mahmoud erfan b.10 June 1891 d.6 September 1961 (b. 1891) |
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| andrej erfan UA (b. 1914) |
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| gamze erfan researcher |
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| muhammad erfan researcher (ORCID 0000-0002-0942-3486) |
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| ahmed m erfan researcher ORCID ID = 0000-0001-6432-8898 |
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| mazen erfan researcher |
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| mostafa erfan Father (b. 1981) |
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