- Iniesta, Luiz Felipe
- Iniesta, Luiz Felipe M.
- Iñigo-Elias Eduardo
- Iñiguez Monroy, Carmen
- Iñiguez, Alena Mayo
- Inkhavilay, Khamla
- Inkpen, Wayne.
- Inland Seed Company.
- Inman Grant, Julie
- Inman, A. H.
- Inman, Douglas L. (Douglas Lamar), 1920-2016
- Inman, Henry, 1801-1846
- Inman, Henry, 1837-1899
- Inman, Jared
- Inman, Mary K.
- Inman, Ondess L. (Ondess Lamar), 1890-1942
- Inman, Robert M
- Inman, Roger.
- Innabi, Julie
- Innes, Alastair J
- Innes, Cosmo, 1798-1874
- Innes, David J
- Innes, Duncan G. L.
- Innes, Henry.
- Innes, R. T. A. (Robert Thorburn Ayton), 1861-1933
- Innes, Reginald Rose,
- Innes, William T. (William Thornton), 1874-1969
- Innis, Donald Q. 1924-1988
- Innisfallen Greenhouses.
- Innocenti, Gianna
- Innocentini, Valdir
- Innocenzo, Muzzalupo
- Inns, R
- Innys, John,
- Innys, William, 1756
- Inoa, Adriana
- Inocencio, Cristina
- Inocencio, Lais
- Inoda, Toshio
- Inohuye-Rivera, Roxana B
- Inoma, Akitoshi
- Inomata, Emiko Ikejiri
- Inostroza, Agar A
- Inostroza, Ingrid
- Inostroza, Patricia
- Inostroza, Pedro A
- Inoue, H
- Inoue, Jun
- Inoue, Keisuke
- Inoue, Kentaro
- Inoue, Koji
- Inoue, Luis Antonio Kioshi Aoki
- Inoue, Mario Takao
- Inoue, Nariaki
- Inoue, Sakae
- Inoue, Shojiro
- Inoue, Shota
- Inoue, Tamiji
- Inouye, Satoshi
- Inqram, Collinuwood
- Insacco, Gianni
- Insafe, EL ABDOUNI
- Insalaco, Enzo
- Insausti, Jesús A
- Insausti, Pedro
- Inscoe, May N., 1925-
- Insect Attractants, Behavior, and Basic Biology Research Laboratory (U.S.)
- Insect Identification and Beneficial Insect Introduction Institute (U.S.)
- Insects Affecting Man and Animals Research Laboratory (U.S.)
- Inserra, R N
- Insisiengmay, Oudomphone
- Inskeep, A. H. (Abraham Hulings), 1780-1857
- Inskeep, Margaret R.
- Inskipp, Carol, 1948-
- Inskipp, Tim
- Insko, W. M. Jr.
- Insom, Emilio
- Institució Catalana d'Història Natural (Barcelona, Spain)
- Institut agricole d'Oka.
- Institut biologii razvitiia (Akademiia nauk SSSR)
- Institut Botànic de Barcelona
- Institut botanico-géologique colonial de Marseille.
- Institut botanique Léo Errera.
- Institut canadien de Québec.
- Institut colonial de Marseille.
- Institut de botanique de Strasbourg.
- Institut de France.
- Institut d'Egypte (1798-1801)
- Institut des Provinces et des Congrès Scientifiques.
- Institut des recherches agronomiques. Association des anciens lves.
- Institut d'Estudis Catalans
- Institut d'Estudis Catalans. Institut de Ciencies. Barcelona.
- Institut d'Estudis Catalans. Secció de Ciències
- Institut égyptien.
- Institut eksperimentalnoi meditsiny (Soviet Union. Soviet narodnykh komissarov)
- Institut für Allgemeine Botanik Hamburg.
- Institut impérial de France
- Institut international de bibliographie scientifique.
- Institut istorii estestvoznaniia i tekhniki (Akademiia nauk SSSR)
- Institut morfologii zhivotnykh im. A.N. Severtsova.
- Institut national des sciences et des arts (France)
- Institut national genevois.
- Institut océanographique.
- Institut Pasteur (Paris, France)
- Institut Royal de France (Paris)
- Institut royal des sciences naturelles de Belgique.
- Institut Za Gorata (Bŭlgarska Akademii︠a︡ Na Naukite),
- Institute for Medical Research (Camden, N.J.)
- Institute for Medical Research (Malaysia)
- Institute For Missionaries On Agricultural And Rural Development.
- Institute for Oceanography.
- Institute for Telecommunication Sciences and Aeronomy (U.S.)
- Institute for Wildlife Studies.
- Institute of Andean Research (New York, N.Y.)
- Institute of Ecology.
- Institute of Ecosystem Studies (New York Botanical Garden)
- Institute of Jamaica, Kingston.
- Institute of Jamaica.
- Institute of Makers of Explosives.
- Institute of Malacology.
- Institute of Northern Forestry (U.S.)
- Institute of Oceanographic Sciences (Great Britain)
- Institute of Science (Philippines)
- Institute of Science and Technology (Philippines)
- Institute of Tropical Forestry (Río Piedras, San Juan, P.R.)
- Institute on Underwater Acoustics London) 1961-
- Institute, Auctores Forest Research
- Institutet för vatten- och luftvårdsforskning (Sweden)
- Instituto anatomico, Firenze.
- Instituto Botánico de Barcelona.
- Instituto Butantan
- Instituto Butantan. Secção de Botânica.
- Instituto Butantan. Secção de Ofiologia.
- Instituto de Biologia Vegetal
- Instituto De Botánica Darwinion (San Isidro, Argentina)
- Instituto de Ciências Biológicas da UFMG. Departamento de Botânica.
- Instituto de Ecología y Sistemática (Academia de Ciencias de Cuba)
- Instituto de Ecología, A C.
- Instituto de Oceanología (Academia de Ciencias de Cuba)
- Instituto de Segunda Enseñanza de La Habana.
- Instituto De Zoologia "dr. Augusto Nobre."
- Instituto Español de Oceanografía
- Instituto Físico-Geográfico Nacional (Costa Rica)
- Instituto Geográfico Argentino, Buenos Aires.
- Instituto Geográfico Argentino.
- Instituto Geológico de México
- Instituto Geológico de México.
- Instituto Histórico y Geográfico del Uruguay.
- Instituto Médico Nacional (Mexico)
- Instituto Oswaldo Cruz
- Instituto Tecnico di Novara.
- Instituut Voor Plantenziekten (Buitenzorg, Dutch East Indies)
- Instituut voor Plantenziekten en Cultures.
- Instrument Society of America Toronto and Los Angeles) 1961-
- Instrument Society of America.
- Instrument Society of America. Marine Sciences Division.
- Instytut Botaniki (Polska Akademia Nauk)
- Instytut Botaniki Im. W. Szafera.
- Insunza, Bárbara
- Intake Water Company.
- Integrated Environments (2006) Ltd.
- Integrated Forest Pest Management Colloquium Pinchot Institute for Conservation Studies) 1978-
- Intera Environmental Consultants.
- Interagency Ad Hoc Task Force.
- Interagency BLM Aquatic Task Group.
- Interagency Burned Area Emergency Response Team (U.S.)
- Interagency Conference on Continental Shelf Research Coastal Engineering Research Center) 1965-
- Interagency Greater Sage-Grouse (U.S.). Disturbance and Monitoring Subteam.
- Interagency Grizzly Bear Committee (U.S.)
- Interagency Implementation Team.
- Interagency Wild and Scenic Rivers Coordinating Council.
- Interagency Workshop on In-Situ Water-Quality Sensing: Biological Sensors Pensacola Beach, Fla.) 1980-
- Inter-American Tropical Tuna Commission.
- Interesova, Elena A.
- Inter-Fluve, Inc.
- Intergovernmental Oceanographic Commission.
- Interián-Ku, Víctor Manuel
- Interiano, Ana Lucía
- Interior Columbia Basin Ecosystem Management Project (U.S.)
- Interior Nurseries (Perkinston, Miss.)
- Interior Nursery Company.
- Intermountain Forest and Range Experiment Station (Ogden, Utah)
- Intermountain Forest and Range Experiment Station (Ogden, Utah).
- Intermountain Forest Nursery Association.
- Intermountain Forest Nursery Association. Meeting Bismarck, N.D.) 1989-
- Intermountain Nursery Association.
- Intermountain Nursery Co.
- Inter-Mountain Nursery Co.
- Intermountain Nurseryman's Association.
- Intermountain Nurseryman's Association. Meeting Fort Collins, Colo.) 1985-
- Intermountain Nurseryman's Association. Meeting.
- Intermountain Outdoor Symposium Butte, Mont.) 1980-
- Intermountain Research Station (Ogden, Utah)
- International Arid Lands Meetings New Mexico) 1955-
- International Association for Plant Taxonomy
- International Association For Plant Tissue Culture ( Iaptc )
- International Association For Vegetation Science,
- International Association Of Bryologists.
- International Association of Geophysical Contractors.
- International Association of Instructors and Investigators in Poultry Husbandry.
- International Association of Tropical Agriculture and Colonial Development.
- International Atomic Energy Agency.
- International Billfish Symposium Kailua-Kona, Hawaii) 1972-
- International Botanical Congress Amsterdam, Netherlands) 1865-
- International Botanical Congress Antwerp, Belgium) 1885-
- International Botanical Congress Brussels) 1910-
- International Botanical Congress Brussels, Belgium) 1910-
- International Botanical Congress Brussels, Belgium). 1910-
- International Botanical Congress Genoa, Italy) 1892-
- International Botanical Congress Paris) 1867-
- International Botanical Congress Paris) 1878-
- International Botanical Congress Paris) 1900-
- International Botanical Congress Paris, France) 1867-
- International Botanical Congress Paris, France) 1878-
- International Botanical Congress Saint Petersburg, Russia) 1869-
- International Botanical Congress Vienna) 1905-
- International Botanical Congress Vienna, Austria) 1905-
- International Botanical Congress (2nd : Vienna, Austria) 1905-
- International Botanical Congress (5.º 1930. Cambridge, Reino Unido)
- International Bulb Society.
- International Bureau For Plant Taxonomy And Nomenclature
- International bureau of the American republics, Washington, D.C.
- International Bureau of the American Republics.
- International carneau club and pigeon association.
- International Carnivorous Plant Society.
- International Carnivorous Plant Society. Conference (2nd : Bonn, Germany) 1998-
- International catalogue of scientific literature.
- International Center for Arid and Semi-arid Land Studies.
- International Centre of Insect Physiology and Ecology.
- International Children's School Farm League.
- International Colloquium on the Biology of the Soricidae
- International Colloquium on Winter Ecology of Small Mammals Powdermill Nature Reserve, Rector, Pa.) 14-18 October 1981
- International Commission for the Northwest Atlantic Fisheries.
- International Commission for the Scientific Exploration of the Mediterranean Sea
- International Commission of Jurists (1952- )
- International commission on the control of bovine tuberculosis.
- International Commission on Zoological Nomenclature
- International Commission on Zoological Nomenclature. Secretariat.
- International Committee on Bacteriological Nomenclature.
- International Conference on Coelenterate Biology Noordwijkerhout) 16-07-1995 -21-07-1995
- International Conference On Na, K-Atpase Denmark) 1987-
- International Conference on Numerical Ship Hydrodynamics Paris) 1981-
- International Conference on Plant Growth Substances Yonkers, N.Y.) 1959-
- International Conference on plant hardiness and acclimatization New York, N.Y.) 1907-
- International Congress of Americanists (17th : 1910 : Buenos Aires, Argentina). Delegación Chilena
- International Congress of Americanists 1895 : Mexico City, Mexico)
- International Congress of Anthropological and Ethnological Sciences Zagreb, Croatia) 1988-
- International Congress of Arachnology Geneva, Switzerland) 1995-
- International congress of arts and science St. Louis) 1904-
- International Congress of Entomology.