Ōtani, also romanized as Otani, Ootani or Ohtani, is a Japanese surname meaning "large canyon". Notable people with the surname include:Mamiko Ohtani, Japanese basketball player; wife of Shohei Ohtani , Japanese baseball player Decoy Ohtani, his dog Masutaro Otani, Japanese judo master Robin Otani, British/Japanese judo teacher, son of Masutaro Otani Tomio Otani, British/Japanese kendo master and swordsman, son of Masutaro Otani Hayato Otani , Japanese footballer Momoko Ohtani , Japanese wheelchair tennis player Tomohisa Otani , Japanese baseball player and coach Ikue Ōtani , Japanese voice actress Otani Kikuzo , Japanese general Kow Otani , Japanese composer Ōtani Kōzui , Japanese Buddhist monk and explorer Miho Otani , Japanese military officer Sachiko Otani , Japanese volleyball player Sachio Otani , Japanese architect Shinjiro Otani , Japanese professional wrestler Tomoya Ohtani , Japanese composer Yoshiko Ohtani (1918–2000), Japanese religious leader Ōtani Yoshitsugu , Japanese samurai and daimyō