Ryūichi, Ryuichi or Ryuuichi (written: 隆一, 龍一 or 竜一) is a masculine Japanese given name. Notable people with the name include:
, Japanese academic , Japanese photographer , Japanese politician , Japanese footballer , Japanese film director and editor , Japanese voice actor , Japanese journalist , Japanese baseball player , Japanese footballer , Japanese singer-songwriter, actor and record producer , Japanese figure skater , Japanese voice actor , Japanese motorcycle racer , Japanese bobsledder , Japanese comedian , Japanese samurai , Japanese archer , Japanese judoka and mixed martial artist , Japanese figure skater , Japanese golfer , Japanese singer and musician , Japanese musician and composer , Japanese footballer and manager , Japanese poet, writer and translator , Japanese politician , Russian sale manager
Fictional characters Phoenix Wright, known as in the original Japanese versions of the Ace Attorney series Ryuichi Sakuma, (佐久間竜一, Sakuma Ryūichi in Japanese) is the lead singer of a band called Nittle Grasper in the shōnen-ai manga and anime series Gravitation.