| Name | Acronym | Category |
| (Demo Agency) | DEMO | |
| (test) | | |
| 3M Pharmaceuticals, Inc. | 3M PHARMACEUTICALS | Industry/For profit |
| A&S TRAVEL FUN | A&S TRAVEL FUN | Private Foundation/Non-profit |
| A. B. Hill, Jr. Education Fund | HILL ED FUND | Private Foundation/Non-profit |
| A.S.P.E.N. Rhoades Research Foundation | | |
| AAAI | AAAI | Private Foundation/Non-profit |
| AAORF (American Assoc. Orthodontic Research Foundation) | AAORF | Private Foundation/Non-profit |
| Abbott Laboratories | | Industry/For profit |
| Abcomm, Inc. | ABCOMM | Industry/For profit |
| Abgenix, Inc. | Abgenix | Industry/For profit |
| Abt Associates | | Industry/For profit |
| Acambis, Inc. | Acambis | Industry/For profit |
| Accentia Biopharmaceuticals | Accentia | Industry/For profit |
| ACCp Chest Foundation | ACCP CHEST FDN | Private Foundation/Non-profit |
| Ace Medical Company | ACE MEDICAL | Industry/For profit |
| ACIST MEDICAL | ACIST MEDICAL | Industry/For profit |
| ACMI Corporation | | |
| Acorda Therapeutics, Inc. | Acorda Therapeutics | Industry/For profit |
| Acorn Cardiovascular, Inc. | Acorn | Industry/For profit |
| ACTELION CLINICAL OPERATIONS, INC. | ACTELION CLIN OPS | |
| Actelion Pharmaceuticals, Ltd. | Actelion | Industry/For profit |
| ActivBiotics, Inc. | ActivBiotics | Industry/For profit |
| ACUSPHERE, INC. | ACUSPHERE | Industry/For profit |
| Administration For Children and Families | | |
| Administration on Aging | | |
| ADOLOR CORPORATION | | |
| ADRIA | ADRIA | Industry/For profit |
| ADVANCED BIOLOGICS | | Industry/For profit |
| Advanced Bionics Corporation | ADVANCED BIONICS | Industry/For profit |
| Advanced Cardiovascular Systems | ADVANCED CARD SYS | Industry/For profit |
| Advanced Peptides | ADVANCED PEPTIDES | Industry/For profit |
| Advanced Tissue Sciences | ADVANCED TISSUE | Industry/For profit |
| Adventis Pasteur Limited | Adventis Pasteur Limited | Industry/For profit |
| Aeras Global TB Vaccine Foundation | Aeras Global TB Vaccine Foundation | Industry/For profit |
| AFUD | AFUD | Private Foundation/Non-profit |
| AGA FOUNDATION FOR DIGESTIVE HEALTH AND NUTRITION | AGA | Private Foundation/Non-profit |
| AGA Medical Corporation | AGA MED | Industry/For profit |
| AGDIA, INC. | AGDIA | |
| Agency For Health Care Policy and Research | Agency for Health Care Policy and Research | Private Foundation/Non-profit |
| Agency For Healthcare Research And Quality | AHRQ | Government Other |
| Agency For International Development | AID | |
| Agency For Toxic Substances and Disease Registry | ATSDR | Government Other |
| AGILENT Technology | AGILENT Technology | Private Foundation/Non-profit |
| Agouron Pharmaceuticals | AGOURON PHARM | Industry/For profit |
| Air Force Office of Scientific Research | AFOSR | |
| Aircast Foundation | | Private Foundation/Non-profit |
| AIRCAST FOUNDATION, INC. | AIRCAST FDN | |
| AIS, INC. | AIS | Private Foundation/Non-profit |
| AJINOMOTO | AJINOMOTO | Private Foundation/Non-profit |
| Akermin, Inc. | | |
| Akros Pharma Inc. | Akros Pharma Inc. | Private Foundation/Non-profit |
| Alberta Cancer Brd | ALBERTA CANCER BOARD | Private Other |
| Alcoholic Beverage Medical Research Foundation | ABMRF | Private Foundation/Non-profit |
| Alcon Laboratories | ALCON | Industry/For profit |
| Alere Medical Incorporated | ALERE MEDICAL | Industry/For profit |
| Alexion Pharmaceutical, Inc. | lexion Pharmaceutical | Private Foundation/Non-profit |
| Alfred P. Sloan Foundation | SLOAN | Private Foundation/Non-profit |
| Alimera Sciences | Alimera Sciences | Industry/For profit |
| Alkermes, Inc. | ALKERMES | Industry/For profit |
| Allen & Hanburys Respiratory Institute | AHRI | Industry/For profit |
| Allergan, Inc. | ALLERGAN | Industry/For profit |
| Allergy Therapeutics | | Industry/For profit |
| ALLIANCE FOR CANCER GENE THERAPY | | |
| Alliance For Lupus Research | | |
| Alliance Pharmaceutical Corporation | ALLIANCE PHARM | Industry/For profit |
| Alpha Gamma Delta Foundation | ALPHA GAMMA DELTA | Private Foundation/Non-profit |
| Alpha Omega Alpha Honor Medical Society | AOA HONOR MED SOC | Private Foundation/Non-profit |
| Alpha One Biomedicals | ALPHA ONE BIOMED | Industry/For profit |
| Alpha Therapeutic Corporation | ALPHA THERAPEUTIC | Industry/For profit |
| Alpha Therapeutics | ALPHA | Industry/For profit |
| Alpha-1 Foundation | ALPHA-1 FDN | |
| Alsam Foundation | | |
| Altana Pharma AG | Altana Pharma AG | Industry/For profit |
| AltaRex Corporation | | Industry/For profit |
| Alteon, Inc. | ALTEON | Industry/For profit |
| Alternatives Research & Development Foundation | | |
| Alvin J. Siteman Cancer Center | SITEMAN CANCER CTR | Private Foundation/Non-profit |
| Alza Corporation | ALZA | Industry/For profit |
| Alzheimer's Association | | Private Foundation/Non-profit |
| Alzheimer's Disease And Related Disorders Association, Inc. | ALZHEIM | Private Foundation/Non-profit |
| Ambulatory Ped. Assoc. | AMB PED ASSOC | Private Other |
| AMC Cancer Research Center | | Private Foundation/Non-profit |
| AMDA FOUNDATION | AMDA FDN | |
| Ameren UE | | |
| American Academy Of Facial Plastic Reconstructive Surgery | AAFPRS | Private Foundation/Non-profit |
| American Academy Of Family Physicians | AAFP | Private Foundation/Non-profit |
| American Academy Of Health Care Attorneys | | Private Foundation/Non-profit |
| American Academy Of Orthopedic Surgeons | American Academy of Orthopedic Surgeons | Private Other |
| American Academy Of Otolaryngology | | |
| American Academy Of Otolaryngology - Head And Neck Surgery Foundation | AAO-HNS FDN | Private Foundation/Non-profit |
| American Academy Of Pediatrics | | Private Foundation/Non-profit |
| American Academy Of Religion | American Academy of Religion | Private Other |
| American Association For Advancement Of Surgery And Trauma | AAST | Private Foundation/Non-profit |
| American Association for Cancer Research | | |
| American Association for the Study of Liver Disease | | |
| American Association For the Study Of Liver Diseases | AASLD | |
| American Association of Anatomists
American Association of Anatomists | | |
| American Association Of Colleges Of Nursing | | |
| American Association Of Critical Care Nurses | AACCN | Private Foundation/Non-profit |
|
