Horizon Japan International School (HJIS) (ホライゾンジャパンインターナショナルスクール) is an international school located in Onocho, Kanagawa-ku, Yokohama, Kanagawa prefecture, Japan.

It educates students from preschool to high school – ages two and a half to eighteen – under the IB Diploma Programme.

[1][2] HJIS began its life as a Gakkou Houjin [ja] (学校法人) in 2003 and has received the ECIS[3] Membership Status in 2010, CIS[4] Membership Status in 2011, WASC[5] Accreditation in 2012, IB[1] Authorisation in 2013, and CIS[6] Accreditation in 2018.