Company lists · Data refreshed September 2026

Top 25 International schools based in Japan

Name: International schools based in Japan
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 173 companies tracked

RevenueBase identified 173 international schools headquartered in Japan as of September 2026 and tracks 3,091 professional contacts across them, including 949 with verified work emails. Tokyo is the largest hub.

This list covers international schools headquartered in Japan, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

173Companies

3,091Contacts tracked

949Verified emails

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The 25 largest international schools based in Japan

Ranked by team size

Top 25 of 173 international schools based in Japan, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to international schools: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	The American School In Japan	Partial evidence	Chofu-shi, JapanHQ checked Sep 20, 2026	201-500	298 contacts →
	Partial evidence “The American School in Japan (ASIJ) is an independent, co-educational day school serving students of all nationalities.” Source: RevenueBase Database · checked Sep 20, 2026
2	Canadian Academy	Strong evidence	Kobe, JapanHQ checked Sep 20, 2026	51-200	148 contacts →
	Strong evidence “PreK-Grade 12 international day and boarding school in Kobe Japan.” Source: RevenueBase Database · checked Sep 20, 2026
3	The British School In Tokyo	Partial evidence	Tokyo, JapanHQ checked Sep 20, 2026	201-500	138 contacts →
	Partial evidence “For Employment Opportunities: Established in 1989, The British School in Tokyo is a co-educational school for 3 - 18 year olds, based in the heart of one of the most exciting…” Source: RevenueBase Database · checked Sep 20, 2026
4	Yokohama International School	Strong evidence	Naka-ku, JapanHQ checked Sep 20, 2026	51-200	135 contacts →
	Strong evidence “Founded in 1924, Yokohama International School is an independent, not-for-profit school for children aged 3-18.” Source: RevenueBase Database · checked Sep 20, 2026
5	St. Mary's International School	Indirect evidence	Tokyo, JapanHQ checked Sep 20, 2026	201-500	119 contacts →
	Indirect evidence “The St.” Source: RevenueBase Database · checked Sep 20, 2026
6	Seisen International School In Tokyo	Strong evidence	Tokyo, JapanHQ checked Sep 20, 2026	51-200	73 contacts →
	Strong evidence “Sponsored by the Handmaids of the Sacred Heart of Jesus, Seisen is an international Catholic school that welcomes students from many ethnic groups, cultures and religious…” Source: RevenueBase Database · checked Sep 20, 2026
7	Laurus International School Of Science	Strong evidence	Minato-ku, JapanHQ checked Sep 20, 2026	51-200	72 contacts →
	Strong evidence “Laurus International School of Science provides an integrated education from preschool to elementary school based on the Cambridge International Curriculum and originalSTEAM…” Source: RevenueBase Database · checked Sep 20, 2026
8	Saint Maur International School	Strong evidence	Yokohama, JapanHQ checked Sep 20, 2026	51-200	66 contacts →
	Strong evidence “Established in 1872, Saint Maur International School is a pioneer of international education in Japan, serving students from ages 2½ to Grade 12 within a multicultural…” Source: RevenueBase Database · checked Sep 20, 2026
9	K. International School Tokyo	Indirect evidence	Koto, JapanHQ checked Sep 20, 2026	51-200	63 contacts →
	Indirect evidence “Our Motto: LEARNING FOR LIFE Our Mission: KIST provides academically motivated children from diverse cultural and social backgrounds with high quality education in a safe and…” Source: RevenueBase Database · checked Sep 20, 2026
10	Meysen Academy	Indirect evidence	Sendai, JapanHQ checked Sep 20, 2026	201-500	61 contacts →
	Indirect evidence “OUR MISSION: The mission of MeySen Academy is to provide each of our students with an extraordinary education that is centered on the values and principles of the spirit of Christ…” Source: RevenueBase Database · checked Sep 20, 2026
11	Nagoya International School	Strong evidence	Nagoya, JapanHQ checked Sep 20, 2026	51-200	60 contacts →
	Strong evidence “Since 1964, Nagoya International School (NIS) has grown from a small community initiative into a leading international school in Japan’s Chubu region.” Source: RevenueBase Database · checked Sep 20, 2026
12	Osaka Ymca International School	Strong evidence	Osaka-shi, JapanHQ checked Sep 20, 2026	51-200	59 contacts →
	Strong evidence “Osaka YMCA International School (OYIS) is an independent, not-for-profit, co-educational preschool-Grade 12 day school.” Source: RevenueBase Database · checked Sep 20, 2026
13	Nishimachi International School	Strong evidence	Tokyo, JapanHQ checked Sep 20, 2026	51-200	58 contacts →
	Strong evidence “Nishimachi International School is an independent, coeducational K–9 school located in the heart of Tokyo.” Source: RevenueBase Database · checked Sep 20, 2026
14	Shinagawa International School	Strong evidence	Tokyo, JapanHQ checked Sep 20, 2026	51-200	51 contacts →
	Strong evidence “Shinagawa International School (SIS) Located conveniently near Shinagawa Seaside Station in Tokyo, Shinagawa International School (SIS) is a dynamic and culturally rich IB World…” Source: RevenueBase Database · checked Sep 20, 2026
15	Global Step Academy INC	Partial evidence	Minato-ku, JapanHQ checked Sep 20, 2026	51-200	50 contacts →
	Partial evidence “Global Step Academy Group (GSA) is an international education group that holds multiple operating companies and joint-ventures to provide online and offline international…” Source: RevenueBase Database · checked Sep 20, 2026
16	India International School In Japan - Iisj	Strong evidence	Tokyo, JapanHQ checked Sep 20, 2026	51-200	47 contacts →
	Strong evidence “India International School in Japan (IISJ) is the first school to cater to the Indian diaspora living in Japan.” Source: RevenueBase Database · checked Sep 20, 2026
17	Marist Brothers International School	Strong evidence	Kobe, JapanHQ checked Sep 20, 2026	51-200	46 contacts →
	Strong evidence “Marist Brothers International School (MBIS) is a private, college-preparatory school, catering to students from Pre-Kindergarten to Grade 12.” Source: RevenueBase Database · checked Sep 20, 2026
18	UIA International School Of Tokyo	Indirect evidence	江東区, JapanHQ checked Sep 20, 2026	51-200	43 contacts →
	Indirect evidence “We offer from KG to grade 12, with IPC, Cambridge IGCSE, and Cambridge A-level qualifications.” Source: RevenueBase Database · checked Sep 20, 2026
19	Global Indian International School - Tokyo	Strong evidence	Tokyo, JapanHQ checked Sep 20, 2026	n/a	43 contacts →
	Strong evidence “Welcome to GIIS Tokyo – a leading K-12 international school in Edogawa-ku, Tokyo, accredited by MEXT and committed to academic excellence, innovation, and holistic student…” Source: RevenueBase Database · checked Sep 20, 2026
20	Christian Academy In Japan	Strong evidence	Kurume-Shi, JapanHQ checked Sep 20, 2026	51-200	42 contacts →
	Strong evidence “Established in 1950, Christian Academy in Japan is a K-12, WASC-accredited school that provides high-quality Christian education in English within an international environment.” Source: RevenueBase Database · checked Sep 20, 2026
21	Malvern College Tokyo	Strong evidence	Kodaira, JapanHQ checked Sep 20, 2026	51-200	38 contacts →
	Strong evidence “Continuing to expand its international portfolio of schools, Malvern College has chosen Tokyo, a 'world city' with consistent population growth for its tenth overseas school.” Source: RevenueBase Database · checked Sep 20, 2026
22	Fukuoka International School	Strong evidence	Fukuoka, JapanHQ checked Sep 20, 2026	51-200	37 contacts →
	Strong evidence “Fukuoka International School (FIS) is an international school located in Fukuoka City, Japan.” Source: RevenueBase Database · checked Sep 20, 2026
23	International French School In Tokyo	Strong evidence	Tokyo, JapanHQ checked Sep 20, 2026	51-200	35 contacts →
	Strong evidence “The International French High School in Tokyo as known as "LFI Tokyo" belongs to a network of establishments operated by the Agence pour l’enseignement français à l’étranger…” Source: RevenueBase Database · checked Sep 20, 2026
24	Lycée Français International DE Kyoto	Partial evidence	Kyoto Kansai, JapanHQ checked Sep 20, 2026	11-50	28 contacts →
	Partial evidence “Situated in the heart of Kyoto, the “Lycée français international de Kyoto” bring together a community of french families, french-japanese families and other french speaking…” Source: RevenueBase Database · checked Sep 20, 2026
25	Canadian International School Tokyo	Strong evidence	Tokyo, JapanHQ checked Sep 20, 2026	11-50	25 contacts →
	Strong evidence “Canadian International School (CIS) is a private co-educational institution which offers a complete Canadian K-12 curriculum from the province of Prince Edward Island.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: international schools. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names international schools.
Partial evidence: Its own public description names part of international schools, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international schools. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 173 international schools based in Japan

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International schools based in Japan at a glance

As of Sep 20, 2026

30.7%Verified-email coverage

17.9Average contacts per company

11-50Median size (employees)

12.1%Largest-city concentration · Tokyo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 173 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among international schools, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Japan whose own description of what they do matches “international schools”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names international schools), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among international schools, and records with no verified work email. Companies headquartered outside Japan are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 949 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names international schools, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many international schools are there based in Japan?

RevenueBase identified 173 international schools headquartered in Japan as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

The American School In Japan, headquartered in Chofu-Shi, tops this list with the largest team on record.

Which city has the most international schools?

Tokyo leads with 21 headquartered companies, followed by Xian (8) and Jing (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 949 verified decision-maker contacts tracked across these 173 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.