- d ... D0
- D1-trisomy ... Dacrymycetes
- dacryocystitis ... Daffy Duck
- Dafla ... Dahomey and the Slave Trade
- Dahomey women warriors ... Dainichi-kyō
- Dair al-Baḥrī ... Dalberg, Karl Theodor von
- Dalbergia nigra ... Dalnevostochnaya Respublika
- Dalny ... Damascus rug
- Damascus Securities Exchange ... damp-fold drapery
- damped oscillation ... Dance Repertory Theatre
- dance suite ... dangdut
- Danger Atoll ... Danish East India Company
- Danish Evangelical Lutheran Church of America ... Dantons Tod
- Dantu ... Daqīqī
- Daquin, Louis-Claude ... Darién
- Darien ... Darkness Visible
- Darkot, Mount ... Dartmouth, William Legge, 2nd earl of, Viscount Lewisham, Baron Dartmouth of Dartmouth
- dartos ... Dasht-e Lūt
- Dasht-i Lūt ... Date Line
- date list ... Daumier, Honoré-Victorin
- Daumont, Simon François ... David’s maple
- David, Armand ... Davis, Ann B.
- Davis, Ann Bradford ... Davisville
- Davitt, Michael ... Day in the Country, A
- Day in the Life of a Smiling Woman, A ... Days and Nights
- Days Aweigh ... De Amicis, Edmondo
- De amor y de sombra ... De dominio divino libri tres
- De donde son los cantantes ... De l’auscultation médiate
- De l’autorité du roi ... De Mille, James
- de Millimete gun ... De Republica
- De rerum natura ... de Vries, Adriaen
- De Vries, Peter ... Deadly Affair, The
- Deadly Companions, The ... Death and Fire
- Death and Life of Great American Cities, The ... Death Valley Days
- Death Valley National Monument ... debts, discharge of
- Debucourt, Philibert-Louis ... December 7th
- December Bride ... decoction mashing
- decoder ... deep focus
- Deep Freeze, Operation ... default judgment
- default reasoning ... Definition of Law, The
- deflagrating explosive ... dehydration
- dehydration reaction ... Del sonare sopra ’l basso con tutti li stromenti e dell’uso loro nel conserto
- Del Toro, Benicio ... Delco
- Delécluze, Étienne-Jean ... delivery
- delivery ... Delta Cephei
- delta connection ... Demetrius
- Demetrius Chalcondyles ... Democratic Entente
- Democratic Farmers’ Party ... Demokratichesky Tsentralist
- Demokratischer Verein ... Denck, Hans
- Denden Kōsha ... Denise’s pygmy seahorse
- Denishawn School of Dancing and Related Arts ... dental consonant
- dental continuant ... Departed, The
- département ... depth of compensation
- depth of field ... dermatogen
- dermatoglyphics ... Des Voeux, H. A.
- Des-muma ... Desdunes, Daniel
- Dese ... designated city
- designated hitter ... Desperately Seeking Susan
- Despiau, Charles ... detention
- detention, preventive ... deuterium-tritium pellet
- Deutero-Isaiah ... Deutsches-Gewerbe-Museum zu Berlin
- Deutschland ... Devensian Glacial Stage
- Deventer ... Devil’s worm
- Deville process ... Dewhurst, Colleen
- Dewi ... Dhanwantari
- Dhanya Māṇikya ... dhole
- Dholpur ... diachronic phonology
- diaconate ... dialogue and deliberation
- Dialogue Between a Priest and a Dying Man ... diamondbird
- Diamonds and Rust ... Diary
- Diary ... Diaz, José
- Díaz, Junot ... dichroic mirror
- dichroism ... diction
- Diction: A Quartet ... Dido
- Dido ... Dientzenhofer, Christoph
- Dientzenhofer, Kilian Ignaz ... Différences
- Differend: Phrases in Dispute, The ... digestion
- digestion ... Dignāga
- Digne-les-Bains ... Dillinger
- Dillinger in Hollywood ... Dimokratikos Synagermos
- Dimon, Jamie ... Dinka
- Dinka language ... Diomedeidae
- Diomedes ... Diospyros quaesita
- Diospyros virginiana ... Dipodomys
- Dipodomys elator ... direct primary
- direct printing ... Dirks, Rudolph
- Dirksen, Everett McKinley ... Discoglossidae
- discoid head ... Discreet Charm of the Bourgeoisie, The
- discrepancy principle ... disk harrow
- disk jockey ... Disputa
- Disputatio Iudaei et Christiani ... distillate
- distillation ... dittany
- dittany ... divination
- divination, ordeal by ... Dīwān lughat at-Turk
- Dīwān-e Khass ... Djénné
- Djenné, Mosque of ... DNA typing
- DNA vector ... Dobson, William
- dobsonfly ... Doctrine and Covenants
- Doctrine and Discipline of Divorce, The ... doe
- Doe v. Commonwealth’s Attorney for the City of Richmond ... Doğukaradeniz Dağlari
- Dogville ... Dolgoruky, Vasily Lukich, Knyaz
- Dolgoruky, Vasily Vladimirovich, Knyaz ... Dolphin Tale 2
- Dolphin, The ... Domicile conjugale; La Nuit américaine
- dominance ... Don John; or, The Libertine
- Don Jon ... Donatists
- Donatus ... Donkeys’ Years
- Donkin, Bryan ... Door gagan ki chhaon mein
- Door into the Dark ... Dorian invasion
- Dorian mode ... dorsocaudal medial entorhinal cortex
- dorsopathy ... Dou’e yuan
- Dou, Gerard ... double-acting engine
- double-acting pump ... Douglas Tragedy, The
- Douglas, Aaron ... Dove mi trovo
- dove of peace ... Down, John Langdon
- down-the-line shooting ... DPP
- DPT ... drafting
- drafting ... Drake, Edwin Laurentine
- Drake, Frances Ann Denny ... drawknife
- drawloom ... Drechsler, Horst
- Dred Scott decision ... Drexel and Company
- Drexel Burnham Lambert Inc. ... Dritte Reich, Das
- Drive ... drop-leaf table
- Drop-the-Dip ... Druitt, Montague
- druk gyalpo ... dry curing
- dry damping ... DSDP
- DShK-38 ... dual-tone multifrequency
- Dual-tone multiple frequency ... Ducale, Palazzo
- Ducale, Palazzo ... Dudek, Louis
- Dudeney, Henry ... dugong
- Dugong dugon ... DUKW
- Dulany, Daniel ... dummy
- Dummy ... Duncan, Robert
- Duncan, Robert Edward ... Dunlap, Knight
- dunlin ... Duplex Printing Press Co. v. Deering
- duplex scanning ... Durant, William Crapo
- Durant, William James ... Duryea, Charles E.
- Duryea, Charles E.; and Duryea, J. Frank ... Dutch War
- Dutch ware ... Dvořák, Antonín
- Dvořák, Antonín Leopold ... dyad, indeterminate
- dyadic operator ... dynamic pipe
- Dynamic Psychology ... dysthymic disorder
- dystonia ... Dzyubin, Eduard Georgiyevich