The following is a list of regional ornithological societies.

South Africa

• BirdLife South Africa

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

• BirdsCaribbean

Dominican Republic

• Hispaniolan Ornithological Society

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)

Hungary

• Hungarian Ornitological and Nature Conservation Society (MME)

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^[1]
• Cornell Laboratory of Ornithology
• National Audubon Society
• Ornithological Council
• Pacific Seabird Group
• Raptor Research Foundation
• Rocky Mountain Raptor Program
• Waterbird Society
• Wilson Ornithological Society

Australia

• Birds Australia

New Zealand

• Ornithological Society of New Zealand
• Royal Forest and Bird Protection Society of New Zealand