In the entire world, Ryugo (Ryugo 
) is an extremely rare male first name. Very seldom, Ryugo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ryugo | Japan, China, United States, India, Brazil |
| ryugo teranishi researcher |
|
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| ryugo tero researcher, JP |
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| ryugo ishida Japanese rapper, JP (b. 1993) |
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Ide, Kikuchi, Hoshino, Yoshida, Morizono, Murakami, Shimamura, Kitaguchi, Pangestu, Tsuburaya, Matsumoto, Shimanuki, Kobayashi, Takaramoto, Takahashi, Takeuchi, Yamashita, Arakaki, Yukano, Ito, Maru, Kato, Hara, Onda, Matai, Martins, Chiba, Sasaki, Suzuki, Kuboki, Tanaka, Nimura, Nomura, Naito, and Yoshimura