Family name Ю (Yu 
, 柳 , Ju 
, among others...) , around the world, is a prevalent surname. The cognomen Ю is characteristic of Mongolia, where it is a prevalent surname, Cayman Islands, where it is a widespread surname, and Hong Kong (explore the name in all countries). In absolute terms, it is commonest in China, Myanmar, and Malaysia. Very seldom, Ю is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yu, Yuu | Mongolia, Myanmar, Malaysia, Hong Kong, China |
| 柳 | China |
| Yew, Yoo, Ju | Myanmar, Malaysia, Hong Kong, United States, China |
| You | Myanmar, South Korea, Malaysia, Hong Kong, United States |
| Ю | Kazakhstan, Russia, Kyrgyzstan, China, Ukraine |
| Yū | China, Philippines, Myanmar |
Du, Dụ, Hue, Hüe, Iou, Iu, Iú, Jagi, Janagi, Janai, Jú, Jû, Jü, Jū, Lao, Lau, Lauv, Lauw, Liew, Liou, Liu, Liú, Loo, Low, Lowe, Làu, Lâu, Lưu, Riju, Riyu, Ryong, Ryou, Ryu, Ryuh, Ryō, Ryū, Vưu, Yagi, Yanagi, Yanai, Yau, Yòu, Yóu, Yú, Yü, Yōu, Yǒu, Yǔ, Û, Лю, Рёу, Хюэ, Юй, Яги, Янаги, Янаи, יו, ליו, ليو, لیو, يو, หลิว, やない, やなぎ, ユ, ユー, ラウ, ラオ, リュー, ロー, 休, 俞, 兪, 刘, 刘氏, 劉, 劉氏, 友, 右, 喩, 喻, 尤, 尤氏, 幽, 庾, 於, 有, 有姓, 游, 游氏, 犹, 猶, 由, 류, and 유