The Crazy Cats (クレージーキャッツ, Kurējī kyattsu, also known as Hajime Hana and the Crazy Cats) were a Japanese jazz band and comedy group popular in film and television, particularly between the 1950s and 1970s. Led by Hajime Hana, the band's other main members were Kei Tani, Hitoshi Ueki, Hiroshi Inuzuka, Senri Sakurai, Shin Yasuda, and Ētarō Ishibashi.