Here is the major microbial culture collections in the world:

Culture Collection	Full Name	Website	Key Functions
ATCC	American Type Culture Collection	https://www.atcc.org	Provides high-quality microorganisms, cell lines, viruses, and other biological materials for research and biotechnology. Offers microbial identification and preservation services.
DSMZ	German Collection of Microorganisms and Cell Cultures GmbH	https://www.dsmz.de	Europe's largest collection of microorganisms, offering bacteria, fungi, viruses, and more. Supports research in biotechnology, medicine, and environmental science.
JCM	Japan Collection of Microorganisms	https://jcm.brc.riken.jp	Stores and distributes bacteria, fungi, and actinomycetes for basic and applied research in various fields, including industry and environmental protection.
NBRC	NITE Biological Resource Center	https://www.nite.go.jp/en/nbrc/	Provides preservation and distribution of microorganisms, including bacteria, yeasts, fungi, and actinomycetes, used for industrial and biotechnology research.
CCUG	Culture Collection University of Gothenburg	https://www.ccug.se	Specializes in clinical and environmental microorganisms, providing resources for medical, biotechnological, and environmental research. Offers identification and analysis services.
CCTCC	China Center for Type Culture Collection	http://www.cctcc.org	Major repository in China, preserving bacteria, fungi, viruses, and protozoa. Supports industrial microbiology, environmental protection, and biotechnology research.
NCIMB	National Collection of Industrial, Food and Marine Bacteria	https://www.ncimb.com	Focuses on the preservation of industrial, food, and marine bacteria. Offers strain preservation, identification, and microbial characterization services.
CBS	Centraalbureau voor Schimmelcultures	https://www.wi.knaw.nl	Specializes in the preservation and study of fungi, yeast, and molds. Provides strains for global mycological research and industrial applications.
BCCM	Belgian Coordinated Collections of Microorganisms	https://bccm.belspo.be	Belgium’s official microbial collection, offering bacteria, yeast, fungi, and plasmids for research. Provides strain preservation, identification, and sequencing services.
KCTC	Korean Collection for Type Cultures	https://www.kctc.kribb.re.kr	Korea's largest microbial repository, preserving bacteria, fungi, yeasts, and actinomycetes. Supports biotechnology and industrial research with preservation and genome analysis services.