List of Mathematical Societies (by year founded)

Plato's Academy
Accademia dei Lincei
German Academy of Scientists Leopoldina
Royal Society (London)
Academy of Sciences (Paris)
Hamburg Mathematical Society
Berlin Academy of Science
Spitalfields Mathematical Society (London)
Russian/St Petersburg Academy of Sciences
Royal Swedish Academy of Sciences
Danish Academy of Sciences
Scientific Research Society of Zurich
Gottingen Academy of Sciences
Turin Mathematical Society
Belgium Academy of Sciences
Dutch Mathematical Society
American Academy of Arts & Sciences
National Academy of Sciences of Italy
Royal Society of Edinburgh
Royal Irish Academy
Swiss Academy of Natural Science
New York Academy of Sciences
Royal Astronomical Society (London)
Hungarian Academy of Sciences
Royal Statistical Society
American Statistical Society
Austrian Academy of Sciences
Spanish Academy of Sciences
Norwegian Academy of Science & Letters
Union of Czech Mathematicians & Physicists
National Academy of Sciences
Moscow Mathematical Society
London Mathematical Society
Finnish Mathematical Society
Bulgaria
French Mathematical Society
Danish Mathematical Society
Mathematical Society of Japan
Tokyo Mathematical Society
Kharkov Mathematical Society
Royal Society of Canada
Edinburgh Mathematical Society
Mathematical Circle of Palermo
Serbian Academy of Sciences
Mathematical Association of Tokyo
New York Mathematical Society
St Petersburg Mathematical Society
German Mathematical Society
Kazan Physico-mathematical Society
Czech Academy of Science
Janos Bolyai Mathematical Society
Göttingen Mathematical Society
Jagiellonian University Mathematics Society
American Mathematical Society
Romanian Mathematical Society
Union of Bulgarian Mathematicians
Austrian Mathematical Society
Warsaw Scientific Society
Indian Mathematical Society
Finnish Academy of Sciences
Swiss Mathematical Society
Kaiser Wilhelm Society (Munich)
German Statistical Society
Mathematical Association of America
Polish Mathematical Society
Hellenic Mathematical Society
Norwegian Mathematical Society
Ukrainian Academy of Sciences
International Mathematical Union
Finnish Statistical Society
Petrograd Physico-Mathematical Society
Belgium Mathematical Society
Italian Mathematical Union
German Society for Applied Mathematics & Mechanics
Trinity College Dublin Mathematical Society
Estonian Mathematical Society
Belarus Academy of Sciences
Catalan Society for Physics
Indian Academy of Sciences
Chinese Mathematical Society
Argentina Mathematical Union
Latvian Society of Physicists & Mathematicians
Portuguese Mathematical Society
Slovak Academy of Sciences
Mexican Mathematical Society
Canadian Mathematical Society
Korean Mathematical Society
Latvian Academy of Sciences
Icelandic Mathematical Society
Japanese Association of Mathematical Sciences
Turkish Mathematical Society
Society of Mathematicians & Physicists of Serbia
Max_Planck Society for the Advancement of Science
Society of Mathematicians
Swedish Mathematical Society
Society for Industrial and Applied Mathematics
Polish Academy of Sciences
Columbian Mathematical Society
Australian Academy of Sciences
Australian Mathematical Society
South African Mathematical Society
Allahabad Mathematical Society
Mathematical Association of Quebec
Australian Statistical Society
Vietnamese Mathematical Society
Brazilian Mathematical Society
Union of Slovak Mathematicians & Physicists
Luxembourg Mathematical Society
Malaysian Mathematical Society
Korean Statistical Society
Mathematical Society of the Philippines
Canadian Statistical Society
New Zealand Mathematical Society
African Mathematical Union
Irish Mathematical Society
Hong Kong Mathematical Society
Mathematical Society of Chile
French Applied & Industrial Mathematical Society
Ramanujan Mathematical Society
Catalan Mathematical Society
Swiss Statistical Society
Lithuanian Mathematical Society
European Mathematical Society
Bulgarian Statistical Society
Estonian Statistical Society
Latvian Mathematical Society