Surname Иен (Yen 
, Iyen 
, Ien 
) , around the globe, is a widespread family name. The cognomen Иен is characteristic of Malaysia, where it is a common surname, Taiwan, where it is quite a common surname, and Bermuda (explore the name in all countries). In absolute terms, this name is the most popular in Malaysia, Vietnam, and Taiwan. Very seldom, Иен is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yen | Taiwan, Vietnam, United States, Indonesia, Malaysia |
| Iyen | Singapore, United States, Indonesia, Nigeria, Malaysia |
| Ien | Taiwan, United States, Indonesia, Malaysia, China |
| Иен | Kazakhstan, Russia, Belarus, Kyrgyzstan |