K. International School Tokyo (KIST, ケイ・インターナショナルスクール東京 Kei Intānashonaru Sukūru Tōkyō) is a private, non-denominational international school located in Tokyo, Japan, founded in 1997 by Yoshishige and Takako Komaki.

The elementary school was featured on ABC News where KIST students were interviewed about the UK Royal Wedding between Prince William and Kate Middleton, to show Japanese school children's impressions, on March 28, 2011.

Additionally, the school provides an academic support program called the Learning Enhancement Academic Program (LEAP)[1] that is geared toward assisting elementary students with English and Math.

It Contains Multiple Science Labs, a Gymnasium, a Student Lounge, and a Large Library.

From 9th grade, students are required to bring their own personal laptop to school.