Cognomen Ien (Ien 
, イエン , Иен 
) , worldwide, is quite a rare surname. The last name Ien is characteristic of Tunisia, where it is quite a rare surname, Lithuania, and Mauritius. In absolute terms, the name is most common in Indonesia, Japan, and Tunisia. Also, Ien is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ien | Japan, Indonesia, Tunisia, Egypt, France |
| イエン | Japan |
| Иен | Kyrgyzstan, Kazakhstan, Russia, Belarus |
|
ien dales Dutch politician (1931-1994), NL (b. 1931) |
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| ien van laanen Dutch creator, NL (b. 1956) |
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| ien perrier-german (b. 1948) |
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| marci ien Canadian politician and journalist, CA (b. 1969) |
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| ien chi American filmmaker, US (b. 1991) |
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