Astronomy	- American Astronomical Society (AAS)
Biochemistry	- American Society of Biochemistry and Molecular Biology (ASBMB)
Biology	- Society for Developmental Biology (SDB) - American Institute of Biological Sciences (AIBS) - Federation of American Societies for Experimental Biology (FASEB)
Chemistry	- American Chemical Society (ACS)
Computers	- Association of Computing Machinery Computer Science (ACM) - Computer Science Society (CompSoc) - The Institute of Electrical and Electronics Engineers (IEEE)
Engineering	- directory listing of Engineering Organizations - also see organizations for women in engineering below
Geology	- American Geological Institute (AGI)
Mathematics	- American Mathematical Society (AMS) - The Mathematical Association of America (MAA)
Physics	- American Physical Society (APS) - American Association of Physics Teachers (AAPT)
Microbiology	- American Society for Microbiology (ASM)
Medicine	- American Medical Association (AMA) - Biomedical Engineering Society (BES) - American Society for Pharmacology and Experimental Therapeutics (ASPET) - National Association for Biomedical Research (NABR)
Neuroscience	- Society for Neuroscience (SFN)
Toxicology	- Society of Environmental Toxicology and Chemistry (SETAC) - Society for Toxicology (SOT)
Women	- Association for Women in Mathematics (AWM) - Association for Women In Science (AWIS) - Society of Women Engineers (SWE) - Women in Engineering Programs & Advocates Network (WEPAN) - Center for Women in Science and Engineering (WISE)
Minority	- Science and Engineering Network for Minorities (New England) (NEBHE) - Society of Hispanic Professional Engineers (SHPE) - National Organization of Black Chemists and Chemical Engineers (NOBCChE) - American Indian Science and Engineering Society (AISES) - National Action Council for Minorities in Engineering, Inc. (NACME) - National Society of Black Engineers (NSBE), Corporate Sponsors - Southeastern Consortium for Minorities in Engineering (SECME) - Society for Advancement of Chicanos and Native Americans in Science (SACNAS)
General	- The American Association for the Advancement of Science (AAAS)