Ryūnosuke, Ryunosuke or Ryuunosuke (written: 龍之介, 隆之介, 竜之介 or 龍之助) is a masculine Japanese given name. Notable people with the name by the character combination will be grouped as:
(龍之介)
Ryūnosuke Akutagawa (芥川 龍之介; 1892–1927), Japanese writer
Ryūnosuke Endō (遠藤 龍之介; born 1956), Japanese businessperson
Ryunosuke Kingetsu (金月 龍之介; born 1971), Japanese screenwriter
Ryūnosuke Kusaka (草鹿 龍之介; 1893–1971), Imperial Japanese Navy admiral
Ryunosuke Kimura (木村 龍之介; born 1983), Japanese theatre director
Ryunosuke Mochida (持田 龍之介; born 1993), Japanese weightlifter
Ryūnosuke Tsukigata (月形 龍之介; 1902–1970), Japanese actor
Ryūnosuke Tsukue (机 龍之介; born 1997), Japanese squash player
(隆之介)
Ryunosuke Kamiki (神木 隆之介; born 1993), Japanese actor and voice actor
Ryunosuke Noda (野田 隆之介; born 1988), Japanese footballer
(竜之介)
Ryunosuke Okamoto (岡本 竜之介; born 1984), Japanese footballer
(龍之助)
Ryunosuke Sugawara (菅原 龍之助; born 2000), Japanese footballer
Fictional characters
Ryūnosuke Akasaka (赤坂 龍之介), character in the anime and light novel series The Pet Girl of Sakurasou
Ryūnosuke Akutagawa (芥川 龍之介), character in the anime and manga series Bungo Stray Dogs
Ryūnosuke Chiba (千葉 龍之介), a character from Assassination Classroom
Ryunosuke Fujinami (藤波 竜之介), character in the manga series Urusei Yatsura
Ryunosuke Ibuki (井吹 龍之介), character in video game and anime series Hakuouki
Ryunosūke Naruhōdo, character in the Ace Attorney series
Ryunosuke Natsume (夏目 龍之介), character in the manga series All Purpose Cultural Cat Girl Nuku Nuku
Ryūnosuke Tanaka (田中 龍之介), character in the anime and manga series Haikyuu!! with the position of wing spiker from Karasuno High
Ryūnosuke Umemiya, a character from Shaman King
Ryūnosuke Uryū (雨生 龍之介), character in the light novel series Fate/Zero
Ryuunosuke Mogumo (百雲 龍之介), character in the manga series Love Me for Who I Am
Ryunosuke Miyaji (宮地 龍之介), character in the anime and manga series Starry Sky