- Dellatorre, Fernando
- Delle Chiaie, S. (Stefano), 1794-1860
- Dellelegn, Y
- Dellelegn, Yilma
- Dellenbaugh, Frederick Samuel, 1853-1935
- Deller, K M
- Deller, M
- Dell'Erba, Rafael
- Dellinger, T.
- Dellith, Chris
- Dell'uomo, A
- Dellwood Greenhouses.
- Delmar, Alexander
- Del-Mar-Va Nurseries.
- Delmas, D
- Delmastro, G B
- Delmastro, Giovanni B
- Delmatier, Charmaine H
- Delmerick, James George
- Delmore, J E
- Delmotte, A
- Deloach, C J
- DeLoach, D. B. (Daniel Barton), 1904-
- Delocado, Emmanuel
- Delogne, Charles-Henri 1834-1901
- Deloitte, Haskins & Sells.
- Delondre, Augustin, 1823-1879
- Delong, Colleen A
- DeLong, Don Clifton
- DeLong, Dwight M. (Dwight Moore), 1892-1984
- DeLong, George Earl,
- Delong, J P
- DeLong, Robert L.
- Delonglee, Sebastien
- Delongueville, Christiane
- Delor, active 1846-
- Delord, Taxile, 1815-1877
- DeLorenzo, Katie
- Delorme, L. D.
- Delorme, Magali
- Delorme, Natalí
- Delotelle, Roy S
- Deloya López, Aristeo Cuauhtémoc
- Delph, L W
- Delphi Team.
- Delphia Dell Gardens.
- Delphy, Jean
- Delpiani, Gabriela
- Delpiani, Sergio
- Delpiani, Sergio Matías
- Delpietro, Horacio A
- Delpino, Eugenia M
- Delpino, Federico
- Delponte, G.B. Giovanni Battista 1812-1884
- Delprato, Pietro,
- Delpratt, C John
- Delpratt, J
- Delpratt, John
- Delprete, Piero G.
- Delrieu -Trottin, Erwan
- Delroy, A N N
- Delsing, Patricia M.
- Delsman, Hendricus Christoffel, 1886-
- Delson, Eric.
- Delta And Pine Land Company,
- Delta Environmental Management Group.
- Delta Experiment Station,
- Deltgen, Florian
- Delton, Hanson
- Deltshev, Christo
- Delucchi, Gustavo
- Delucchi, Gustavo
- DeLue Experimental Farm.
- Delunardo, Frederico Augusto Cariello
- Delunardo, Thiago Andrés
- DeLury, Justin S.
- Delury, Naomi C
- DeLury, Ralph E.
- DelValls, Tomás Ángel
- Delvare, Gérard
- Delvecchio, Robert J
- Delvinquier, B L J
- Delwiche, Charles F
- Delwood Dahlia Garden.
- Delwood Dahlia Gardens.
- Dema, Sangay
- Demainbray, S. (Stephen), 1759-1854
- Demaintenon, M J
- Demaio, Pablo
- Demaman, L. V.
- Demana, Patrick Hulisani
- Demandt, E.
- Demange, A. B.
- Démange, Jean Marie
- Demange, Jean-Marie
- Demangel, Diego
- Demant, Laura
- Demarais, Stephen.
- Demarchi, D. A. 1943-
- Demarchi, Mike W.
- Demarco, Diego
- Demaree, Delzie, 1889-1987
- Demaree, J. B. (Juan Brewer), 1885-
- Demaree, Richard S
- Demarest, Sarah Austin
- Demaría, Manuel R
- DeMaris, Philip J.
- Demarquay, J. N. (Jean Nicolas), 1811-1875
- DeMars, Arthur J.,
- DeMars, Craig
- DeMars, Donald J.
- Demars, K. R.
- Demartini, Edward E
- DeMartini, John D.
- Demarz, Herbert
- Demas, Sinbaldo
- Demastes, James W
- Demathieu, Georges
- Demathieu, Georges D.
- Dematteis, E
- Dematteis, E R
- Dematteis, E Ravizza
- Dematteis, Massimiliano
- Demaynadier, Phillip G
- Demboski, J R
- Dembowski, Jan B
- Demchak, Kathleen
- Demeda, Kátia
- Demeke, Yirmed
- Demelius, P
- Demenezes., E M
- Dement, John C.
- Dement, Thomas
- DeMercer-Breese, Jean
- DeMerchant, Ian
- Demere, Krysta D.
- Demere, Thomas A.
- Demerec, M
- Demergasso, Cecilia
- D'Emerico, Saverio
- DeMeritte, Edwin
- Demers, Joseph R.
- Demers, Pierre
- Demesse, Lucien
- Demeter, A
- Demetrio, C. H. (Charles Hermann), 1845-1936
- Demetrio, Guilherme Ramos
- Demetrion, Robert A.
- Demetriou, Jakovos
- Demetrius Pepagomenus, fl 1260-
- Demetropoulos, Andreas
- Demetropoulos, Simon
- Demeulemeester, B
- Demeulenaere, Else
- Demeulenaere, S
- Demeunier, Jean-Nicholas (Jean-Nicolas), 1741-1814
- Demeusy, Noelle
- Demey, Ron
- Demʹi︠a︡nov, V. N.
- Demicheli, Alvaro
- Demicheli, Mario
- Demidenko, B. G. (Boris Gerasimovich)
- Demidov, Anatolīĭ, principe di San Donato, 1812-1870
- Demidov, Elim Pavlovich, principe di San Donato, 1867-
- Demidov, Pavel Grigor'evich.
- Demidova, Anna N
- Demidova, Maria
- Demidova, Tatiana
- Demilio, Danica
- DeMilio, Erica
- DeMilo, Albert B.
- Demin, Dmitry V
- Deming, W E
- Demir, Emine
- Demir, Hakan
- Demirak, Meryem Senay Şengul
- Demirbilek, Zeki.
- Demirel, Nazli
- Demirjian, Vahe D
- Demissew, Sebsebe
- Demite, Peterson R. (Peterson Rodrigo)
- Deml, Irmingard
- Deml, Reinhold
- Demma, Dominic J.
- Demme, Rudolf.
- Demmon, E. L. (Elwood Leonard), 1892-1981
- Demmon, Elwood Leonard, 1892-
- Demo, Caroline
- Demol, Ivan Antonovich.
- Demol, Thierry
- Demoll, Reinhard
- Demond, Joan
- Demong, N J
- Demonstration Erosion Control Project (U.S.)
- Demont, M E
- Demonte, Danilo
- DeMonte, Louis A.
- Demontoy, M-C
- Demontzey, P. (Prosper), 1831-1898
- Demoor, J. (Jean), 1867-1941
- DeMoor, V.
- Demoor, V. P. G.
- Demortier, M H
- Demos, Terrence C.
- Demoss, Gerald L.
- Demosthenes, Liane Cristine Rebouças
- DeMotte, Ruby Thorne.
- Demoulin, V
- Demoulin, Vincent
- Demoussy
- Demoussy, E
- Dempsey, H. C.
- Dempsey, J. H. C.
- Dempsey, Jeffrey A.
- Dempsey, Ruth E
- Dempsky, Michelle R.
- Dempson, J. Brian
- Dempster, Edith R
- Dempster, James Herbert, 1873-
- Dempster, L J
- Dempster, Lauramay T.
- Dempster, Robert P
- Dempster, Sue
- Dempster, Thomas, 1579?-1625
- Dempster, W T
- Dempster, W. H.
- Demuth, Geo. S. (George S.)
- Demuth, George S.
- Demuth, George Sidney, 1871-1934
- Demuth, R F
- Demuth, R P
- Den Besten, Jan Willem, 1970-
- Den Biggelaar, Christoffel
- Den Boer, M H
- Den Heever, J A Van
- den Nijs, Loes
- Denadai, Márcia Regina
- Denaeyer, A.
- Denaiffe & Son (Carignan (Ardennes, France))
- Denaro, L
- Denby, Roland K.
- Denchev, Cvetomir
- Denchev, Cvetomir M
- Denchev, Teodor T.
- Denckla, M
- Denda, Tetsuo
- Dendooven, Luc
- Dendy, Arthur, 1865-1925
- Denecke, Jonathan
- Denegri, María A