- Amaoka, Kunio
- Amar, Arjun
- Amar, Gabriel
- Amar, Jules.
- Amar, Youcef
- Amarai, Afranio Do
- Amaral dos Santos, Urânia
- Amaral Filho, B. F.
- Amaral Filho, Benedicto Ferreira do
- Amaral Zettler, Linda A
- Amaral, A. Cecília Z. (Antonia Cecília Zacagnini), 1948-
- Amaral, Adriane leite do
- Amaral, Afrânio do, 1894-1982
- Amaral, Alice F.
- Amaral, Aline Monique Blank do
- Amaral, Ana M.R. do
- Amaral, Antonia Cecília
- Amaral, Aryanne Gonçalves
- Amaral, AS
- Amaral, Benedito Domingues do
- Amaral, Cárita Liberato do
- Amaral, Cibele Hummel do
- Amaral, Cleomara Nunes do
- Amaral, D.
- Amaral, Dário D
- Amaral, Dário Dantas do
- Amaral, Fernanda
- Amaral, Fernanda Duarte
- Amaral, Flavia Maria Mendonça Do
- Amaral, Franco
- Amaral, Frederico Queiroga do
- Amaral, Getúlio J. A. do
- Amaral, GV.
- Amaral, Helder
- Amaral, HLC
- Amaral, Idême Gomes
- Amaral, Iêda Leão do
- Amaral, Izidoro Sarmento Do
- Amaral, João Renato de Barros Campos do
- Amaral, Karlia Dalla Santa
- Amaral, Lourdes Isabel Velho do
- Amaral, Lúcio de Paula
- Amaral, Luiz Augusto do
- Amaral, M. E. C.
- Amaral, Maria Clara Rebouças do
- Amaral, Maria Do Carmo E
- Amaral, Maria do Carmo E. (Maria do Carmo Estanislau)
- Amaral, Maria Eugênia C
- Amaral, Marilia Kerr do
- Amaral, Marina F.
- Amaral, Marina Milanello do
- Amaral, Michael
- Amaral, PP.
- Amaral, Rodrigo Lopes
- Amaral, Rodrigo S.
- Amaral, Silvana Vargas do
- Amaral, Thales Simioni
- Amaral, V. C.
- Amaral, V. C. S.
- Amaral, Vanessa Siman Do
- Amaral-Medrano, David Antonio
- Amaral-Silva, Paulo Marcos Amaral-Silva
- Amarante, Alessandro Francisco Talamini
- Amarante, Cristiana Vasconcellos Goulart
- Amarante, Cristine Bastos do
- Amarante, Luciano do
- Amarante, Sérvio Túlio P.
- Amaranthus, Michael P.
- Amarap, Lêda Leão Do
- Amarasinghe, A. A. Thasun
- Amarasinghe, Chamara
- Amaratunga, K L D
- Amardi, Yunico
- Amarga, Ace Kevin S
- Amariles, Daniel
- Amarilla, Luis Alberto
- Amaro dos Santos, Glauco
- Amaro, Ahyran
- Amaro, Paulo Matthes Orlandi De
- Amaro, Priscila
- Amaro-Espejo, Isabel Araceli
- Amarrillo-Suárez, Ángela
- Amarylis Gardens,
- Amaryllis Gardens.
- Amason, Carl
- Amat, Aníbal G.
- Amat, Eduardo
- Amat, Graciela
- Amata, Franco Ciro
- Amatangelo, Kathryn
- Amateur Entomologists' Society (Great Britain)
- Amateur florist.
- Amat-García, Germán
- Amat-Herbozo, Carolina de.
- Amati, B
- Amati, Bruno
- Amati, Pasquale, 1726-1796
- Amato de Moraes Vazzoler, Anna Emilia
- Amato, Lusitano, 1511-1568
- Amato, Antonella
- Amato, George
- Amato, José Felipe Ribeiro
- Amato, Suzana Bencke
- Amatus Lusitanus
- Amatya, S M
- Amawalk Nursery.
- Amax Petroleum of Canada Inc.
- Amaya, José Antonio
- Amaya, Kevin
- Amaya, Leisy
- Amaya, Vanessa
- Amaya-Bulla Diana
- Amaya-Chávez, Araceli
- Amaya-Márquez, Marisol
- Ambacher, Alan H.
- Ambalaparambil, Sudhikumar
- Ambarle, Marke
- Ambarlı, Didem
- Ambauen, Andrew Joseph, 1847-
- Ambavane, Priyanka
- Ambedkar, V C
- Ambedkar, Vijaykumar C
- Ambekar, Mayuresh
- Amber Lake Nurseries.
- Amberger, G
- Amberson, William R
- Amblard, Louis, 1830-1909
- Ambler Nurseries.
- Ambler, Joseph Alfred, 1889-
- Ambler, Joseph Alfred, 1889-1948
- Ambler, Julie W.
- Ambler, Mark.
- Ambler, R. P. (Russel P.)
- Ambo-Rappe, Rohani
- Ambríz García, Demetrio Alonso
- Ambriz, Enrique
- Ambrocio, Ana
- Ambrogi, A Occhipinti
- Ambrogi, Anna Occhipinti
- Ambrosano, Gláucia Maria Bovi
- Ambrose Bros.
- Ambrose, D P
- Ambrose, Dunston P
- Ambrose, G J
- Ambrose, Graeme
- Ambrose, Harrison W
- Ambrose, John D.
- Ambrose, R F
- Ambrose, Rf
- Ambrose, Richard E.
- Ambrose, Richard F
- Ambrose, Robert E.
- Ambrose, Stanley H
- Ambrose, T
- Ambrosi, Francesco, 1821-1897
- Ambrosini, Bartolommeo, 1588-1657
- Ambrosini, Giacinto
- Ambrósio, Ângela Maria
- Ambrósio, Carlos Eduardo
- Ambrósio, Daniela L.
- Ambrosio, Elia
- Ambrósio, Sandra Tereza
- Ambrosio-Calderón, José Dolores
- Ambroson'S,
- Ambrozek, Bogdan
- Ambrožič, Špela
- Ambrozio-Assis, André
- Ambrózy, István, Baron.
- Ambu, Laurentius
- Amburgey, Staci
- Amdan, Laura
- Amdrup, Georg Carl, 1866-
- Amdur, Ben H
- Amdur, M A
- Amec Foster Wheeler (Firm)
- Amed, Kalilúdin, active 1879-
- Amedegnato, Christiane
- Amedy, Bro Matthew
- Amegee, Emmanuel Yawo
- Ameghino, Carlos
- Ameghino, Florentino, 1853-1911
- Amein, Michael, 1926-
- Ameixa, Olga
- Ameka, Gabriel
- Amel, Alioua
- Amela García, María Teresa
- Amélio, Leandro de Almeida
- Ameliyanovich, Maxim
- Ameloot, Nele
- Amelot de Chaillou, Antoine-Jean, 1732-1795
- Amemiya, S
- Amemiya, Shonan
- Amen, Rahma
- Amend, B. R.
- Amend, R. B.
- Amenda, James
- Amenda, Ruth
- Ament, J.G.
- Ament-Velásquez, S. Lorena
- Amenyogbe, Mawuli Korsi
- Amer, Lilia Ait Mohamed
- Amer, Nermeen R.
- Ameri, Ali
- American Aberdeen-Angus Breeders' Association,
- American Academy of Arts and Sciences.
- American Agricultural Association.
- American Amaryllis Society
- American Antiquarian Society.
- American Apple Congress.
- American Arachnological Society
- American Art Association.
- American Assembly.
- American Association for Study and Prevention of Infant Mortality.
- American Association for the Advancement of Science.
- American Association for the Advancement of Science. Botanical Club.
- American Association for the Advancement of Science. Pacific Coast Committee.
- American Association for the Advancement of Science. Section on Dentistry.
- American Association for the Advancement of Science. Section on Geology and Geography.
- American Association for the Advancement of Science. Section on Medical Sciences.
- American Association for the Advancement of Science. Section on Zoological Sciences.
- American Association for the Advancement of Science. Meeting 1896 : Buffalo, N.Y.)
- American Association for the Advancement of Science. Section on Anthropology.
- American association for the planting and preservation of city trees.
- American Association of Anatomists.
- American Association of Economic Entomologists
- American Association of Immunologists
- American association of medical milk commissions.
- American Association of Medical Superintendents of Asylums for the Insane.
- American Association of Museums.
- American Association of Nurserymen.
- American Association of Nurserymen. Annual Convention Detroit, Mich.) 1915-
- American Association of Park Superintendents.
- American Association of State Highway Officials.
- American Association of Veterinary Laboratory Diagnosticians.
- American Association of Zoo Keepers
- American Association of Zoo Keepers. San Diego Chapter.
- American Berkshire Association.
- American Bird Conservancy.
- American Birding Association.
- American Bison Society.
- American Book Co.
- American Breeders Association.
- American Bryological and Lichenological Society
- American Bryological Society
- American Buff Wyandotte Club.
- American Bulb Company.
- American Canoe Association.
- American Chemical Specialties Co.
- American Civic Association. Department of Parks and Public Reservations.
- American Civic Association. Dept. of National and State Parks.