- Denver Wildlife Research Center. Field Station (Fort Collins, Colo.)
- Denver Wildlife Research Center. International Programs Research Section.
- Denver.
- Denys de Monfort, Pierre, approximately 1768-
- Denys de Montfort, Pierre, 1766?-1820
- Denys de Montfort, Pierre, ca 1768-
- Denys Zirngiebel (Firm)
- Denys, C.
- Denys, Christiane
- Denys, L
- Denys, Nicolas, 1598-1688
- Denys, Nicolas, 1609?-1686?
- Denysenko-Bennett, Magdalena
- Denzau, H
- Denzer, Wolfgang
- D'Eon, Robert G.
- Deonier, D L
- Deoras, P J
- Deore, L T
- Deori, Chaya
- Deoud, Héctor Francisco, 1855-1934
- Deowanish, Sureerat
- Depa, Łukasz
- Depamphilis, Claude W
- Depannemaeker, P.
- Depape, G
- Deparis, Laurent
- Deparis, O
- DeParl, Joseph A.
- Department of Indian Affairs and Northern Development
- Department Of Industrial Research Botany Division.
- De-Paula, Joel Campos
- De-Paula, Orlando Cavalari
- Depaz, Michael
- Depéret, Charles
- Depers, A M
- Depeux, Charlotte
- Depew, Chauncey M. (Chauncey Mitchell), 1834-1928
- Depieri, Rogério A.
- Depkin, F Chris
- Deplanche, E. 1824-1874
- Deplazes, Peter
- Deplers, M A
- Depner, K R
- Depoe, Charles E
- Depoli, Guido
- Deposit Seed Company (Deposit, N.Y.)
- Depot Road Nurseries.
- Depot Road Nursery.
- Depot Roads Nurseries.
- Deppe, Ferdinand, 1794-1861
- Deprá, Gabriel
- Deprá, Gabriel de Carvalho
- Deprá, Maríndia
- DePratter, Chester B.
- Depuiset, A.
- Depuiset, Alphonse
- Depuy, Gary
- Dequal, Lidia
- Dequatre, B
- Dequech, Sônia Thereza Bastos
- Dequevauviller, François-Jacques, 1783-1848?
- Der Kaaden, Anna-Selma Van
- Der Made, Jan G Van
- Der Ploeg, Jan Van
- Der Reijden, E D Van
- Der, J. J.
- Der, Joshua
- Derafshan, Hossein Ali
- Deragon, W R
- Deraniyagala, P E P
- Deranja, Maks
- Derasary, Lara.
- Derazo, Janeth
- Derbák, Dávid
- Derbès, Auguste Alphonse, 1818-1894
- Derbowka, Darren
- Derby Free Library and Museum and Art Gallery.
- Derby Gardens' Gladioli (Firm)
- Derby Gardens' Gladioli.
- Derby, Earl of
- Derby, Charles D.
- Derby, E. H. (Elias Hasket), 1803-1880
- Derby, Earl of
- Derby, Edward Smith Stanley, Earl of, 1775-1851
- Derby, George S.
- Derby, Orville A
- Derby, Richard H
- Derbyshire Archaeological and Natural History Society.
- Derbyshire, Maria Teresa Vitral de Carvalho
- Derbyshire, P
- Dercourt, J
- Dercum, Francis
- Derderian, Constance T.
- Deregibus, Alejandro V.
- Deregibus, Víctor A
- Deremdorj, Sodnomtsog
- de-Resende, Briseida D.
- Derezin, Marvin
- Dergam, Jorge Abdala
- Derge, Katharine L
- Dergunova, Natalia
- Derham, Michael
- Derham, W. (William), 1657-1735
- Derheims, Jean Lambert, 1798-
- Deri, Paolo
- Déribéré-Desgardes, P.
- Derick, Carrie M. (Carrie Matilda), 1862-1941
- Derickx, Lisa
- Derijard, Raoul
- Dering, Monika
- Derka, Tomáš
- Derkarabetian, Shahan
- Derksen, Arthur J .
- Derksen, Dirk V
- Derlindati, Enrique J.
- Dermen, Haig
- Dermott, R. A.
- Derner, RB.
- Derocher, Andrew
- Deroin, Thierry
- Derosa, Y Susan
- Deroseers, Alain
- Derosier, S B
- Derothe, J-M
- Derouaux, Antoine
- Derouet, Lise
- Derousie, Megan
- DeRoy, Emma
- Derr, A D Austin J N
- Derr, Chiska C.
- Derr, Dawn P
- Derr, H. B. (Harry Benjamin), 1867-
- Derra, G
- Derrick, E M
- Derrick, Michele
- Derring-Do (Nursery)
- Derry, A C
- Derry, N J
- Derry, Robert.
- Derscheid, J-M
- Dershimer, Mrs T D
- Dertien, Jeremy
- Derting, Terry L.
- Dery, D. A.
- DeRyke, Willis.
- Derzhavin, A N
- Des Cars, A. (Amédée), 1820-1899
- Des Cloizeaux, A. (Alfred), 1817-1897
- Des Gozis, Maurice
- Des Marais, David J
- Des Moines incubator co.
- Des Moines Nursery Co.
- Des Moines Nursery Company.
- Des Moines Seed Company.
- Des Moulins, Charles, 1798-1875
- Des Murs, Marc Athanase Parfait Œillet, 1804-1889
- Des Roches, Peter, Bishop of Winchester, 1238
- Desa, R O
- Desai, Ajay A.
- Desai, B N
- Desai, Bhawanisingh G
- Desai, H V
- Desai, J H
- Desai, M H
- Desai, Rinku J
- Desai, V R
- Desaillet,
- Desaint, Catherine-Michelle, fl 1771-1808
- DeSaint.
- Desale, M J
- Desales-Lara, Marco Antonio
- DeSalle, Rob.
- Desanctis, Peter N
- Desante, David F
- Desantis, Dominic L
- Desantis, L J M
- Desanto, E M
- Desanto, Jerry
- Desaulniers, N T
- Desautels, Roger J.
- Desbois, F.
- Desbonne, Isis.
- Desbordes, H
- Desborough, G A
- Desborough, J G
- Desbrochers des Loges, Jules. 1836-1913
- Desbrochers, T
- Desbruyères, Daniel
- Descal, E
- Descals, E
- Descamps, Marius
- Descamps, Michel
- Descamps, Sébastien
- Descanso Distributors Inc.,
- Descarpentries, A
- Descarpentries, André 19-
- Descarpentries, J
- Descartes, P. N., active 19th century-
- Descartes, René, 1596-1650
- Desch, Clifford E J R
- Deschamps, Andraea, active 1681-
- Deschamps, J R
- Deschamps, Jorge R
- Descharmes, René, 1881-1925
- Deschatres, R
- Descheneau, Catherine, 1948-2016
- Deschka, Gerfried
- Deschutes National Forest (Agency : U.S.)
- Descimon, H
- Descoings, Bernard 1931-2018
- Descourtilz, J. T. (Jean Théodore) 1796-1855
- Descourtilz, M. E. (Michel Etienne), 1775-1835
- Descy, J-P
- Déséglise, Alfred
- Déséglise, Pierre Alfred, 1823-1883
- Desender, K
- Desenne, Victor.
- Deseret Agricultural and Manufacturing Society.
- Desert Botanical Garden (Ariz.)
- Desert Fishes Council (U.S.). Annual Symposium Sul Ross State University) 2001-
- Desert Garden Nursery,
- Desert Garden of Jesmond Dene.
- Desert Garden.
- Desert Plant Co.
- Desert Plant Co. (El Paso, Tex.)
- Desert Tortoise Preserve Committee, Inc.
- Deserti, Maria I.
- Desfayes, M
- Desfontaines, René Louiche, 1750-1833
- Desgarennes, Damaris
- Desgodets, Antoine
- DesGranges, Jean-Luc
- Desgrez
- Desha, David L
- Deshaies, André
- Deshayes, G. P. (Gérard Paul), 1795-1875
- Deshayes, Mons
- Deshefy, G S
- Deshmukh, G B
- Deshmukh, S. K. (Sunil K.)
- Deshmukh, Shriniwas
- Deshmukh, V D
- Deshmukh, Vishal P
- Deshpande, B V
- Deshpande, R R
- Deshpande, U R
- Deshpande, V G
- Desi, En D
- Desiderato, Andrea