The following is a list of regional ornithological societies.
Africa
South Africa
BirdLife South Africa
Asia
India
Bombay Natural History Society (BNHS): Located at Mumbai (formerly Bombay). Sálim Ali Centre for Ornithology and Natural History (SACON) Located near Coimbatore.
Japan
Wild Bird Society of Japan (WBSJ) Yamashina Institute for Ornithology
South Korea
Birds Korea
Caribbean
BirdsCaribbean
Dominican Republic
Hispaniolan Ornithological Society
Europe
Danmark
Dansk Ornitologisk Forening
Germany
Deutsche Ornithologen-Gesellschaft
Italy
LIPU, Lega Italiana Protezione Uccelli
Norway
Norwegian Ornithological Society
Poland
Polish Society for the Protection of Birds (OTOP)
Spain
Spanish Ornithological Society
Catalan Ornithological Institute
Sweden
Sveriges ornitologiska förening (SOF)
Switzerland
Swiss Ornithological Institute (Vogelwarte)
United Kingdom
British Ornithologists' Club
British Ornithologists' Union (BOU) British Trust for Ornithology (BTO) British Birds Rarities Committee Royal Society for the Protection of Birds (RSPB) Scottish Ornithologists' Club Wildfowl and Wetlands Trust (WWT)
North America
Canada
Bird Studies Canada
Society of Canadian Ornithologists
British Columbia Field Ornithologists
Mexico
CIPAMEX, La Sección Mexicana del Consejo Internacional para la Preservación de las Aves, A.C.
USA
American Birding Association
American Ornithological Society (Formed in 2016 by the merger of the American Ornithologists' Union and the Cooper Ornithological Society) Association of Field Ornithologists Baird Ornithological Club Cornell Laboratory of Ornithology National Audubon Society Ornithological Council Pacific Seabird Group Raptor Research Foundation Rocky Mountain Raptor Program Waterbird Society Wilson Ornithological Society