Cognomen เยน (Yen 
, Iyen 
, Yens 
) , in all the world, is a widespread last name. The last name เยน 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). Measured by absolute frequency, it most frequently occurs in Malaysia, Vietnam, and Taiwan. Much less frequently, เยน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yen | Indonesia, Taiwan, Vietnam, Malaysia, United States |
| Iyen | Indonesia, Singapore, Malaysia, United States, Nigeria |
| Yens | Indonesia, Australia, Algeria, Malaysia, United States |
| เยน | Thailand |
ไว, จัน, บดีภัทรกุล, วงศ์เจริญ, and พัฒนะพิชัย