Family name Riyu (Riyu 
) , in the entire world, is quite a rare last name. The surname Riyu is characteristic of Malaysia, where it is quite a rare surname, Qatar, and United Arab Emirates. Not in comparison with a country's population, the name is most common in Malaysia, Indonesia, and United Arab Emirates. More frequently, Riyu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Riyu | Japan, Indonesia, Saudi Arabia, United Arab Emirates, Malaysia |
Jagi, Janagi, Janai, Ju, Riju, Ryou, Ryu, Ryuh, Ryō, Ryū, Yagi, Yanagi, Yanai, Yu, Риыу, Рёу, Ю, Яги, Янаги, Янаи, រីយូ, やない, やなぎ, リユ, 利予, 利于, 利余, 利宇, 利彧, 利昱, 利榆, 利欲, 利毓, 利渝, 利煜, 利玉, 利瑜, 利禹, 利羽, 利育, 利裕, 利语, 利郁, 利钰, 利雨, 利鱼, 日予, 日于, 日余, 日宇, 日愉, 日昱, 日渝, 日煜, 日玉, 日瑜, 日禹, 日羽, 日育, 日裕, 日誉, 日語, 日语, 日钰, 日雨, 日鱼, 柳, 赖宇, 赖玉, 赖育, 赖裕, 赖雨, 赖鱼, 里予, 里余, 里昱, 里煜, 里玉, 里瑜, 里禹, 里裕, 里钰, 里雨, and 里鱼
Rk, Riyas, Ogata, Muanze, Sharma, Suzuki, Kayana, Kojima, Kumari, Hj Embo Perok, Irawan, Yurili, Yumari, Shimizu, Abraham, Azumaya, Yuriter, Yuridet, Yuriper, Banerjee, Nakamura, Hermawan, Rifky, Watanabe, Ricon, Kumar, Mao, Roy, Ryu, Lee, Liu, Tan, Mori, Sato, Simi, Arai, Chan, Biti, Khan, Romy, Devi, Garg, Jiao, Tira, Yuri, Zaki, Singh, Patel, and Francisco