Family name Ен (En 
, Ен 
) , worldwide, is a common cognomen. The last name Ен is habitual in South-eastern Asia, particularly Malaysia, where it is quite a common surname, Singapore, and Brunei, where it is quite a rare surname. In absolute terms, it most frequently occurs in Malaysia, China, and India. Also, Ен is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| En | China, Indonesia, Egypt, Malaysia, India |
| Ен | Uzbekistan, Kazakhstan, Russia, Kyrgyzstan, Ukraine |
Ana, Anaïs, Ane, Aneta, Anete, Anetta, Anette, Anja, Ann, Anna, Annaig, Anne, Annete, Annett, Annetta, Annette, Anya, Enn, Ganna, Hana, Hania, Hanka, Hanna, Hannah, Hanne, Hanusia, Jen, Yen, Ánna, Άνα, Άννα, Ан, Ана, Анаис, Ане, Анет, Анета, Анетт, Анечка, Анн, Анна, Анне, Аннетт, Аннетта, Аннэ, Анэт, Анэта, Анюта, Анюша, Аня, Ања, Ганна, Ганнуся, Ена, Енн, Нюра, Нюта, Нюша, Хана, Ханна, Эн, Энн, אן, אנה, אנט, אניה, האנה, חנה, آن, آنا, آناهیتا, أنيت, هان, هانا, هنا, আনা, আন্না, แอนนา, ანა, アナ, アニャ, アネット, アン, アンナ, アンヌ, ハナ, ハンナ, ハンネ, 安, 安内特, 安妮, 安娜, 安纳, 安雅, 汉妮, 汉娜, 漢娜, 雅妮, 안나, and 하나