Company lists · Data refreshed September 2026

Top 13 Strategic communications consultancies based in Japan

RevenueBase identified 49 company matches for strategic communications consultancies associated with Japan as of September 2026 and tracks 479 professional contacts across them, including 49 with verified work emails. Tokyo is the largest hub.

This list covers company matches for strategic communications consultancies associated with Japan, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 14, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 14, 2026 How this list was built
49Companies
479Contacts tracked
49Verified emails
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The 13 largest strategic communications consultancies based in Japan

Ranked by team size
Top 13 of 49 company matches for strategic communications consultancies based in Japan, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 14, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchShinjuku-ku, JapanHQ recorded Sep 14, 202611-5031 contacts →

Exact match

“Inoue Public Relations has been a pioneer in Japan’s public relations industry ever since our founding almost 50 years ago by Takashi Inoue, Founder & CEO.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
2Exact match千代田区, JapanHQ recorded Sep 14, 202611-5026 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
3Exact matchMinato-ku, JapanHQ recorded Sep 14, 202611-5018 contacts →

Exact match

“Ashton Consulting is a leading international corporate communications advisory agency, established in and based in Tokyo.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
4Exact match港区, JapanHQ recorded Sep 14, 202611-508 contacts →

Exact match

“KREAB Tokyo is a Strategic PR Communications Consulting company based out of 2-5-1 MORI9F, Japan.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
5Exact matchTokyo, JapanHQ recorded Sep 14, 20261-104 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
6Exact matchChiyoda-ku, JapanHQ recorded Sep 14, 202611-504 contacts →

Exact match

“Parthenon Japan is a strategic communication firm based in Tokyo, Japan.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
7Exact match武蔵野市, JapanHQ recorded Sep 14, 20261-102 contacts →

Exact match

“We are a consultancy specializing in developing communication plans alongside management to drive the results you seek.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
8Exact match港区, JapanHQ recorded Sep 14, 20261-102 contacts →

Exact match

“Office KNN is a PR agency based in Tokyo, offering bilingual communication consulting services for companies who are seeking to expand business in Japan.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
9Exact matchShinagawa, JapanHQ recorded Sep 14, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
10Exact match渋谷区, JapanHQ recorded Sep 14, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
11Exact matchTokyo, JapanHQ recorded Sep 14, 20261-101 contacts →

Exact match

“Montciel is a Tokyo based Communications Consultancy born from the success of Rugby World Cup 2019 in Japan.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
12Exact matchSetagaya-ku, JapanHQ recorded Sep 14, 20261-101 contacts →

Exact match

“Established in 2017, Smith & Edit is an independent Tokyo-based copywriting and communications consultancy.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
13Exact matchKyobashi, JapanHQ recorded Sep 14, 20261-101 contacts →

Exact match

“JAYID is a Tokyo-based strategic PR and communications agency specialising in helping global B2B technology companies build credibility, visibility, and long-term trust in Japan.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase

Showing 13 of 49 strategic communications consultancies based in Japan

See the full list, filter by size, metro and specialty, and access 49 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Strategic communications consultancies based in Japan at a glance

As of Sep 14, 2026
10.2%Verified-email coverage
9.8Average contacts per company
1-10Median size (employees)
22.4%Largest-city concentration · Tokyo
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
12
51-200
2
201-500
4
501-1,000
1
5,001-10,000
1
10001+
1

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 49 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Japan whose business descriptions match “strategic communications consultancies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 49 professional contacts with verified work emails across the full matched dataset. 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 14, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “strategic communications consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many strategic communications consultancies are there based in Japan?

RevenueBase identified 49 company matches for strategic communications consultancies associated with Japan as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Inoue Public Relations, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most strategic communications consultancies?

Tokyo leads with 11 company records, followed by Jing (4) and Ageo (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 49 professional contacts with verified work emails tracked across these 49 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 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 SmartSearch, 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.