In no particular order yet... or even close to complete - under construction

The United Kingdom

• The Tolkien Society - active

• Taruithorn - Oxford Smial of The Tolkien Society - active

The United States

• American Tolkien Society - active

• The Mythopoeic Society - active

• Heren Istarion - dormant

• Middle-earth Fellowship

• University of Wisconsin Tolkien Society

• Tolkien Society of America - defunct

• American Hobbit Association - defunct

Colombia

• Sociedad Tolkien Colombia Orodruin - active

France

• La Compagnie de la Comté - active

• Tolkiendil - active

• La Faculté des études elfiques - defunct

Finland

• Suomen Tolkien-seura Kontu - active

Japan

• Shiro No Norite - active?

Netherlands

• Tolkien Genootschap Unquendor - active

Philippines

• The Philippine Tolkien Society

Poland

• Śląski Klub Fantastyki - active

Russia

• The St. Petersburg Tolkien Society - active