Resource: Professional Societies
- Astrobiology at NASA
- Astrobiology Graduates in Europe
- Astrobiology Society of Britain
- Atlanta Film Society
- Austin Film Society
- Australasian Institute for Maritime Archaeology
- Australian Centre for Astrobiology
- Australian Institute of Marine Science
- Australian Institute of Marine Science
- Australian Marine Conservation Society
- Authors Licensing and Collecting Society
- Azul
- Bahamas Plastic Movement
- Bald Head Island Conservancy
- Barnstable Clean Water Coalition
- BC Whales
- BDPA
- Better Angels Society
- Big STEM Communicators Network
- Billion Oyster Project
- Bimini Biological Field Station Foundation
- Biomedical Engineering Society
- Biotechnology and Biological Sciences Research Council
- Biotechnology Innovation Organization
- Biotechnology Institute
- Bite-Back Shark and Marine Conservation
- Black Chick Media
- Black Girls Code
- Black Millennials for Flint
- Black Public Media
- Black TV Film Crew
- Black Writers Collective
- Blacks in Marine Science
- Blacks In Technology
- Blue Frontier Campaign
- Blue Justice
- Blue Marble Space Institute of Science
- Blue Marine Foundation
- BlueVoice
- Bodrum Museum of Underwater Archaeology
- Botanical Art & Artists
- Botanical Research Institute of Texas
- Botanical Society of Britain & Ireland
- Botanical Society of Britain and Ireland
- Botanical Society of Canada
- Botanical Society of Scotland
- Boulder Writers Alliance
- Breathe Conservation Organization
- British Bryological Society
- British Ecological Society