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- Connery, Robert Hough, 1907-
- Connes, Robert
- Connett, John.
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- Conningham, Lieut Alexander
- Connior, Matthew B. (Matthew Brett)
- Connoisseur.
- Connold, Edward T., 1862-1910
- Connolly, Brian M.
- Connolly, Bryan A.
- Connolly, C J
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- Connolly, M
- Connolly, Major
- Connolly, Matthew William Kemble, 1872-1947
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- Connolly, Véronique
- Connoly, C. J.
- Connor, H E
- Connor, John Hal, 1896-
- Connor, Katherine L.,
- Connor, Louis George, 1883-
- Connor, Sheila
- Connor, Steve
- Connor, Valerie M
- Connor, W. Floyd
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- Connors, Matthew
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- Conolly, Captain Edward
- Conolly, Edward
- Conolly, Henry Milton, 1882-
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- Conover, Henry Boardman, 1892-1950
- Conover, Mary Roberts, 1880-
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- Conover, Robert J.
- Conover, V. F.
- Conoxty, Capt Enwarn
- Conrad Loddiges & Sons
- Conrad, Alaina
- Conrad, C. Eugene.
- Conrad, F. J.
- Conrad, Geoffrey W.
- Conrad, George Miles, 1911-1964
- Conrad, Hally H.
- Conrad, Henry S
- Conrad, J E
- Conrad, Jack L.
- Conrad, John Woeppel.
- Conrad, Kelvin F
- Conrad, Kevin
- Conrad, Kyle R
- Conrad, Mara
- Conrad, R A
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- Conrad, Travis
- Conrad, W.
- Conrad. Uualdkirch.
- Conradi Barrena, Mercedes
- Conradi, Albert F. (Albert Frederick), 1877-
- Conradie, Werner
- Conrado, Ana
- Conrado, Guilherme Taboada
- Conrad-Pyle Co.
- Conradt, Leopold
- Conrad-Wagner Bulb Co.
- Conran, John
- Conran, John L
- Conrard, L
- Conrath, Paul
- Conrey, Reesa Yale.
- Conring, Hermann, 1606-1681
- Conrow, Robert
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- Conroy, Nicole
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- Consatti, Guilherme
- Consaul, L. L.
- Consaul, Laurie Lynn, 1960-
- Consciência, Susana
- Conseil de l'agriculture de la Province de Québec.
- Conseil international de la chasse et de la conservation du gibier
- Conser, H N
- Conserva, Auristela Dos Santos
- Conservation Commission of Louisiana,
- Conservation Congress (2nd : 1994 : Springfield, Ill.)
- Conservation Data Center (Idaho)
- Conservation Foundation.
- Conservation Foundation. Audio-Visual Center.
- Conservatoire botanique national de Porquerolles
- Conservatoire et jardin botaniques de la ville de Genè€ve.
- Conservatoire et jardins botaniques de Nancy.
- Considine, Thomas J.
- Consigliere, Claudia
- Consiglio, C
- Consiglio, G
- Consiglio, Giovanni
- Consiglio, Jessica A.
- Consolaro, Hélder
- Console, Carlo
- Cônsoli, Fernando L.
- Consolidated Expanded Metal Companies
- Consolidated Nurseries (Santa Monica, Calif.)
- Consolidated Nurseries.
- Consolidation Coal Company.
- Consolo, Verónica F
- Consoni, Karina Federle
- Consorte-McCrea, Adriana
- Consortium, Actias
- Consortium, Ednaqua-Plan
- Constable Expeditions to the Northwest (1897-1899)
- Constable, A. (Edinburgh)
- Constable, Andrew
- Constable, Charles G
- Constable, Edward,
- Constable, H. Strickland (Henry Strickland), 1821-1909
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- Constance, Antonio
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- Constance, Lincoln, 1909-2001
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- Constans, L.
- Constant, Alexandre, 1829-1901
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- Constantia Nursery,
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- Constantin, R
- Constantin, Robert
- Constantin, Silviu
- Constantine, Andrew Eric, 1965-
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- Constantinidis, Theophanis
- Constantino, Luis Miguel
- Constantino, Pedro de Araújo Lima
- Constantino, Reginaldo
- Constenius, Kurt N.
- Constock, James Adam
- Consul, H B M
- Consul, H M
- Consumers Power Company (Mich.)
- Consumers Wholesale Nursery Company.
- Contadini, L
- Contador, Tamara
- Contandriopoulos, J
- Contarini, Mario
- Contarini, Nicolo, 1780-1849
- Conte, A
- Conte, Antonio L.
- Conte, Carlos Eduardo
- Conte, Fábio Frangiotti
- Conte, Rafael Bier
- Conte-Grand, Cecilia
- Contejean, Ch
- Contejean, M Ch
- Contel, Eucleia Primo Betioli.
- Contente, Cristiane Teixeira
- Contente, Janielba Do S Braga
- Contente, Riguel Feltrin
- Contents
- Conter, Frank E.
- Conter, Maria R.
- Conti, Angelo.
- Conti, Bruno F. De
- Conti, Elena
- Conti, Eric
- Conti, Erminia
- Conti, F
- Conti, Fabio
- Conti, Georgina
- Conti, Luis Americo
- Conti, Matteo
- Conti, Maurizio
- Conti, P
- Conti, Valerio
- Conticello, Luisa
- Contieri, Wilson A
- Contigiani, Marta S.
- Conti-Jerpe, Inga
- Continental Nurseries (Franklin, Mass.)
- Continental Nurseries.
- Continental Plant Co.
- Continental Plant Co. (Kittrell, N.C.)
- Continental Seed and Plant Farms.
- Continental Seed Company.
- Continuum Dynamics, Inc.
- Contoli, L
- Contor, Craig R.
- Contreras Balderas, Armando Jesús
- Contreras Balderas, Salvador
- Contreras Bravo, Patricio
- Contreras Figueroa, María Elena
- Contreras Mac Beath, Topiltzin
- Contreras Montiel, José Luis
- Contreras R., Carlos
- Contreras Roqué, Julio Rafael
- Contreras Ruiz Esparza, Ana Victoria
- Contreras, Álex
- Contreras, Ana Victoria
- Contreras, Andrea M
- Contreras, Angel
- Contreras, Catalina
- Contreras, Cecilia
- Contreras, Christian
- Contreras, Daniela A
- Contreras, Darío
- Contreras, Domingo
- Contreras, Dori
- Contreras, Felipe A.
- Contreras, Francisco
- Contreras, Guillermo
- Contreras, Heidy
- Contreras, Heraldo
- Contreras, J
- Contreras, Javier
- Contreras, Jorge