Stamps
- 401
- Society for Czechoslovak Philately
- Club promotes collecting of stamps, covers, and postal stationery of the Czech Republic, Slovakia, and other areas geographically related to Czechoslovakia.
- 402
- Society for Hungarian Philately
- Promotes the collection of stamps and study of the postal history of Hungary and related areas by publishing a quarterly journal and providing detailed information about classic Hungarian stamps.
- 403
- The Estonian Philatelist
- Operated by the Estonian Philatelic Society in Sweden, The Estonian Philatelist provides articles about the Baltic state's stamps, plus an online catalogue of Estonian stamps issued from 1918-41.
- 404
- Éire Philatelic Association
- Organization supports collectors of Irish stamps and postal history with both a quarterly journal and a newsletter.
- 405
- China Stamp Society
- Organization for collectors of stamps from China and related areas publishes a bimonthly magazine and displays exhibits on its website.
- 406
- India Study Circle for Philately
- Promotes study and research into postage and revenue stamps and postal history of the Indian subcontinent.
- 407
- International Philippine Philatelic Society
- Organization disseminates information about new Philippine stamps and informs collectors of philatelic material from the Philippines via a quarterly journal.
- 408
- International Society for Japanese Philately
- Organization promotes interest in the stamps of Japan, Japanese colonies and territories, and areas occupied by Japan.
- 409
- Malaya Study Group
- Society of collectors who specialize in the stamps, postal stationery, and postal history of the states of Peninsular Malaysia.
- 410
- Nepal and Tibet Philatelic Study Circle
- Group studies the postal material Nepal, Tibet, Bhutan, and the Indian state of Sikkim.
- 411
- Philatelic Federation of Pakistan
- National organization's website provides listings of officers and members and offers articles about Pakistani stamps.
- 412
- Ryukyu Philatelic Specialist Society
- Group publishes catalogues and other reference materials to support collectors of stamps and postal history used on Japan's Ryukyu Islands.
- 413
- Sarawak Specialists' Society
- Organization of collectors focuses on the postal material of Brunei, Labuan, North Borneo, and Sarawak.
- 414
- Society for Thai Philately
- Organization encourages research and exchange of information about Thai philatelic material.
- 415
- Society of Indo-China Philatelists
- Organization for collectors of stamps issued by Vietnam, Cambodia, and Laos publishes a quarterly journal and provides information about fakes and fantasy stamps.