Butterfly is a studio album by Kimiko Kasai with Herbie Hancock, originally released only in Japan in 1979. This is the only vocal collection album of Hancock's compositions, including six tracks, with accompaniment by Hancock's regular group. The title track "Butterfly" makes an appearance following the original album Thrust (1974), and this is also a vocal version. In 2018, this album was reissued in the UK from Be With Records.