Cognomen リュウマ (リュウマ ) , across the world, is quite a rare surname. The last name リュウマ is characteristic of Eastern Asia, particularly Japan, where it is quite a rare surname.
Ryuuma, and 龍馬
カトウ, オオツカ, イシモト, ミヤモト, ヨシダ, ナガタ, ハチス, ゴトウ, スズキ, コレエダ, サカイ, サトウ, タムラ, タナカ, タカノ, イケダ, イシダ, カガヤ, タカハシ, and ワタナベ
) , across the world, is quite a rare surname. The last name リュウマ is characteristic of Eastern Asia, particularly Japan, where it is quite a rare surname.