Family name Рю (Ryu 
, Rue 
, Zao 
, along with others...) , in the entire world, is a common last name. The cognomen Рю is characteristic of Guernsey, where it is a common surname, Luxembourg, where it is quite a rare surname, and Norway. Measured by absolute frequency, it is commonest in the United States, Indonesia, and China. Also, Рю is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ryu | China, Indonesia, Taiwan, United States, France |
| Rue | Zimbabwe, China, Indonesia, United States, France |
| Zao | China, Indonesia, Myanmar, United States, France |
| Рю | Kyrgyzstan, Kazakhstan, Russia, Ukraine |