- (AU) Australian Philatelic Society (APS)
 - Dedicated to the research, study, publication, and display of all aspects of philately and postal history, both of Australia and its States, and worldwide. - (AU) Entrance and District Stamp Club
- Exists for the promotion and enjoyment of stamp collecting as a hobby.
- American First Day Cover Society
- Noncommercial organisation devoted to the collecting and advancement of First Day Covers.
- American Philatelic Foundation
- Nonprofit organisation offering stamp appraisals and other services.
- American Philatelic Society (3)
- Anglo-Boer War Philatelic Society
- Leads the study of the postal history and usages of the second Anglo-Boer War 1899-1902.
- Association of Great Britain First Day Cover Collectors
- Austin Texas Stamp Club
- Holds monthly programmes, trading sessions, and stamp auctions.
- Baltimore Philatelic Society
- Sponsors of the BALPEX annual stamp show.
- Baroda Philatelic Society
- Organisation dedicated to the cause of philately.
- Bellville Philatelic Society
- News from the society on a monthly basis.
- British North America Philatelic Society (BNAPS)
- Devoted to the collector and researcher of the stamps, postal markings, and postal history of Canada, the pre-Confederation colonies, and Newfoundland.
- Eire Philatelic Association
- Offers details of membership, auctions, newsletter, and more.
- Hampshire Philatelic Federation
- Hawaiian Philatelic Society
- High Wycombe Philatelic Society
- Junior Philatelists of America
- National youth stamp collectors organisation run by and for young people.
- King George VI Collectors Society
- Brings together all those interested in the stamps of the reign of King George VI.
- National Duck Stamp Collectors Society
- Stamp collecting society devoted exclusively to duck stamps. Promotes and encourages the collecting and study of migratory waterfowl hunting and conservation stamps.
- Philatelic Music Circle
- UK-based international thematic society devoted to stamps which have a musical theme.
- Postmark Collectors Club
- National organisation encouraging collection of postmarks and postal history. Hosts museum in Ohio and annual national convention.
- Royal Philatelic Society of Canada (RPSC)
- Features membership information and online library.
- Tuscan Philatelic Dealers Association
- For dealers and collectors of worldwide stamps.
- Vietbay Philatelic Society
- Zeeland Philately
- Highlights the contribution of Zeeland to the postal history of the Netherlands.
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