Issei or Issey is a masculine Japanese given name. Notable people with the name include:
, Japanese baseball player , Japanese actor, voice actor and narrator , Japanese association football player , Japanese politician , Japanese politician , Japanese singer and actor, member of JO1 , Japanese fashion designer , Japanese voice actor , Japanese politician , Japanese jazz fusion guitarist , Japanese actor and comedian , Japanese volleyball player , Japanese cannibal , Japanese photographer , Japanese YouTuber , Japanese politician , Japanese shogi player , Japanese writer , Japanese astronomer
Fictional character Issei Hyodo (兵藤一誠), a character from the light novel series High School DxD Issei Matsukawa (松川 一静), a character from the manga and anime Haikyu!! with the position of middle blocker from Aoba Johsai High