Company lists · Data refreshed September 2026

Top 25 Pharmaceutical manufacturers based in Japan

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 122 companies tracked

RevenueBase identified 122 company matches for pharmaceutical manufacturers associated with Japan as of September 2026 and tracks 9,206 professional contacts across them, including 1,922 with verified work emails. Osaka is the largest hub.

This list covers company matches for pharmaceutical manufacturers 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 17, 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 17, 2026 How this list was built

122Companies

9,206Contacts tracked

1,922Verified emails

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The 25 largest pharmaceutical manufacturers based in Japan

Ranked by team size

Top 25 of 122 company matches for pharmaceutical manufacturers based in Japan, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Daiichi Sankyo Japan	Exact match	Tokyo, JapanHQ recorded Sep 17, 2026	10001+	1,491 contacts →
	Exact match “Daiichi Sankyo is an innovative global healthcare company contributing to the sustainable development of society that discovers, develops, and delivers new standards of care to…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Eisai Co., LTD	Exact match	Bunkyo-ku, JapanHQ recorded Sep 17, 2026	1,001-5,000	494 contacts →
	Exact match “Eisai’s Corporate Concept is “to give first thought to patients and people in the daily living domain, and to increase the benefits that health care provides.” Under this Concept…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Shionogi & Co., LTD	Exact match	Osaka, JapanHQ recorded Sep 17, 2026	1,001-5,000	418 contacts →
	Exact match “Philosophy The purpose of the Shionogi Group's corporate activities is, as expressed in the opening of its Company Policy, to "supply the best possible medicine to protect the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	ONO Pharmaceutical Co., LTD	Exact match	Osaka, JapanHQ recorded Sep 17, 2026	1,001-5,000	339 contacts →
	Exact match “Ono Pharmaceutical Co, Ltd.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Rohto Pharmaceutical Co., LTD	Exact match	Osaka, JapanHQ recorded Sep 17, 2026	1,001-5,000	251 contacts →
	Exact match “ROHTO Pharmaceutical Co, Ltd is a multinational company with a history of over 120 years, renowned for its fast-moving consumer goods and OTC drugs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	グラクソ・スミスクライン(株)	Exact match	港区, JapanHQ recorded Sep 17, 2026	1,001-5,000	191 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Sumitomo Pharma Co., LTD	Exact match	大阪市中央区, JapanHQ recorded Sep 17, 2026	1,001-5,000	184 contacts →
	Exact match “This is the official company page of Sumitomo Pharma Co, Ltd.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	ブリストル・マイヤーズスクイブ(株)	Exact match	新宿区, JapanHQ recorded Sep 17, 2026	1,001-5,000	143 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Towa Pharmaceutical	Exact match	Kadoma, JapanHQ recorded Sep 17, 2026	1,001-5,000	122 contacts →
	Exact match “Founded in Osaka in 1951, for over 70 years we have been dedicated to research, develop, manufacture, and distribute generic medicines to fulfill our Ikigai: Contribute to…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	中外製薬工業 Chugai Pharma Manufacturing Co., LTD	Exact match	北区, JapanHQ recorded Sep 17, 2026	1,001-5,000	109 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	持田製薬(株)	Exact match	新宿区, JapanHQ recorded Sep 17, 2026	1,001-5,000	47 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Bushu Pharmaceuticals LTD	Exact match	Kawagoe, JapanHQ recorded Sep 17, 2026	1,001-5,000	40 contacts →
	Exact match “Japan’s premier contract manufacturing organization.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	エスエス製薬(株)	Exact match	新宿区, JapanHQ recorded Sep 17, 2026	201-500	29 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Fuji Chemical Industries Co., LTD	Exact match	Nakaniikawa-gun, JapanHQ recorded Sep 17, 2026	201-500	23 contacts →
	Exact match “Fuji Chemical Industries is a pharmaceutical company headquartered in Toyama, Japan, founded in 1946 and proudly celebrating its 80th anniversary this year.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	サンファーマ株式会社	Exact match	港区, JapanHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	久光製薬(株)	Exact match	鳥栖市, JapanHQ recorded Sep 17, 2026	11-50	16 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	日本メジフィジックス(株)	Exact match	江東区, JapanHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “is a pharmaceuticals company based out of, Japan.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Juzen Chemical Corporation	Exact match	富山市, JapanHQ recorded Sep 17, 2026	201-500	12 contacts →
	Exact match “While the out-sourcings at each level of intermediates, APIs and preparations are aggressively and strategically deployed globally by pharmaceutical companies, we are committed to…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Suzuken Co., LTD	Exact match	Nagoya, JapanHQ recorded Sep 17, 2026	n/a	10 contacts →
	Exact match “The Suzuken group, with Health Creation as our business domain, has expanded into a variety of businesses beyond our core business of wholesale of ethical drugs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Katsuyama Pharmaceuticals K.K	Exact match	Katsuyama, JapanHQ recorded Sep 17, 2026	201-500	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Nifuji, INC	Exact match	Setagaya, JapanHQ recorded Sep 17, 2026	1-10	7 contacts →
	Exact match “At Nifuji, Inc, located in Tokyo we have been serving as a reliable and dedicated partner in the pharmaceutical industry since our establishment.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	あゆみ製薬(株)	Exact match	中央区, JapanHQ recorded Sep 17, 2026	201-500	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	ダイト(株)	Exact match	富山市八日町, JapanHQ recorded Sep 17, 2026	501-1,000	5 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	株式会社ケミックス	Exact match	横浜市港北区, JapanHQ recorded Sep 17, 2026	1-10	4 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	エンサイス株式会社	Exact match	渋谷区, JapanHQ recorded Sep 17, 2026	1-10	2 contacts →
	Exact match “1)\t(2)\t(3)” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “pharmaceutical manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 122 pharmaceutical manufacturers based in Japan

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Pharmaceutical manufacturers based in Japan at a glance

As of Sep 17, 2026

20.9%Verified-email coverage

75.5Average contacts per company

51-200Median size (employees)

7.4%Largest-city concentration · Osaka

Sep 17, 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 122 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 “pharmaceutical manufacturers” 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 1,922 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 17, 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 “pharmaceutical manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many pharmaceutical manufacturers are there based in Japan?

RevenueBase identified 122 company matches for pharmaceutical manufacturers 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?

Daiichi Sankyo Japan tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most pharmaceutical manufacturers?

Osaka leads with 9 company records, followed by Jing (5) and Tokyo (5).

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 1,922 professional contacts with verified work emails tracked across these 122 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 17, 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.