Corporate profile


Yamasa aims to make valuable contributions to society.

For a company to survive and prosper, it has to be acknowledged as being worth existing in society. In other words, it has to have the unique ability to differentiate itself from other companies, and provide society with valuable convenience and benefit by optimizing this ability while conducting sound and fair business operations.

Head office address 2-10-1 Araoicho, Choshi, Chiba, 288-0056, Japan
Representative Chairman of the Board: Michio Hamaguchi
President: Naoyuki Ishibashi
Business founded 1645
Incorporated November 1928
Capital stock 100 million yen
Number of employees 888 (Year 2023)
Field of business
  • 1. Manufacture of soy sauce
  • 2. Manufacture of various seasonings
  • 3. Manufacture of pharmaceutical products
  • 4. Others
  • 60.0 billion yen (Year 2023)
Offices Head office, R&D and factory : Choshi, Chiba
Tokyo office : Chuo-ku, Tokyo
Sales offices : Sapporo, Sendai, Niigata, Shizuoka, Nagoya, Kanazawa, Osaka, Hiroshima, Fukuoka
Affiliated companies


1645 Founded
1899 Organized soy sauce laboratory (the first soy sauce laboratory in Japan)
1928 Incorporated
1957 Established 5′-Nucleotide manufacturing technology using the enzymatic RNA degradation method
1970 Obtained a govermental permit for manufacturing active pharmacentical ingredients
1986 The start of diagnostic products using monoclonal antibody technologies.
1992 Establishment of YAMASA CORPORATION U.S.A.
1994 Completed the construction of U.S. factory in Oregon
2011 Completion of the Narita Factory (YAMASA NARITA, INC.)
2015 Establishment of YAMASA EUROPE B.V.
2016 Establishment of YAMASA ASIA OCEANIA CO., LTD.
Opened Soy Sauce Tasting Center