Surname Ryui (Ryui 
) , worldwide, is a rare family name. The surname Ryui is characteristic of Japan, where it is a rare surname, and Malaysia. Also, Ryui is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ryui | Japan, Malaysia, United States |
| koji ryui Japanese born Australian artist, AU (b. 1976) |
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