Horizon Japan International School, also known as HJIS, is a non-profit, privately owned organization headquartered in Japan. Founded in 2003, the school has approximately 70 employees and reported $10.6M in revenue as of 2023. Functioning as an international school located in Onocho, Kanagawa-ku, Yokohama, Kanagawa prefecture, Japan, it educates students from preschool to high school, covering ages two and a half to eighteen, under the IB Diploma Programme.