Pittsburgh-Cleveland Catalysis Society
- Overview of activities and officers.
- http://www.pitt.edu/~gveser/pccs/

Catalysis Club of Chicago
- NACS affiliate. Presentation of organization, awards, and schedule of upcoming meetings.
- http://www.cmt.anl.gov/CCC/

The Nordic Catalysis Society
- Scandinavian association that organizes the biennial Nordic Symposium on Catalysis, as well as educational events.
- http://www.nordic-catalysis.org/

International Association of Catalysis Societies
- Organizes the quadrennial International Congress on Catalysis. Information about the organization, upcoming events, and newsletters.
- http://www.iacs-icc.org/

Catalysis Society of Metropolitan New York
- Local NACS affiliate presents general information about the group, membership, and meeting schedule.
- http://nycsweb.redlich.net/

The Catalysis Club of Philadelphia
- Group of academic and industrial scientists presents its meeting schedule, news, events, and membership information.
- http://catalysisclubphilly.org/

Brazilian Catalysis Society
- Research in Brazil and other countries.
- http://www.sbcat.org/index-eng.htm

International Zeolite Association
- Aims to promote the development of zeolite science and technology. News, publication listing, commissions, upcoming and past conferences, structure databases, and links.
- http://www.iza-online.org/

Catalysis Section of the Royal Dutch Chemical Society
- Organisation uniting members from academia and industry who are active in the field of catalysis. Provides a newsletter and information about conferences and membership.
- http://www.kncv.nl/katalyse/

European Federation of Catalyst Societies (EFCATS)
- Federation of societies from 24 European countries. Site provides information on its biennial EuropaCat conference, links to national catalysis societies, and courses and research on catalysis throughout Europe.
- http://www.efcats.org/

Organic Reactions Catalysis Society
- Group of scientists focusing on catalysis as applied to organic synthesis, whose primary activity is an annual conference. Site includes information about the conference, awards, officers, and membership.
- http://www.orcs.org/

Catalysis Society of Japan
- Presents information on conferences and seminars, and international symposia. [Japanese/English]
- http://www.shokubai.org/

The North American Catalysis Society (NACS)
- Promotes the growth and development of the science of catalysis and ancillary scientific disciplines, through meetings, education, and exchange of information. Site includes history of catalysis, meeting and event calendar, and educational information.
- http://www.nacatsoc.org/