- D ... D.S.O.
- D0 ... Dacrydium cupressinum
- Dacrymycetales ... Dafeng Milu National Nature Reserve
- Ḍaffah al-Gharbīyah, Al- ... Dahomey
- Dahomey ... Daines, Steve
- Daines, Steven David ... Dalarna
- Dalāʾil al-Iʿjāz ... dalmatic
- Dalmatin, Jurij ... Damascus
- Damascus carpet ... Damon, Matt
- Damon, Matthew Paige ... Dance of the Chosen
- Dance of the Forests, A ... Danewirk
- danewort ... Danilo Romanovich
- Danilova, Aleksandra Dionisyevna ... Dantiscus, Johannes
- Dantley, Adrian ... Dapsang
- dapsone ... Dargwa language
- Darhan ... Darkness
- Darkness ... Dartmouth
- Dartmouth ... Dashhowuz
- Dashiell Hammett: A Life ... Datapoint 2200
- Datapost ... Daulat
- Daulat Rao Sindhia ... David of Tao
- David Sears House ... Davis, Al
- Davis, Alexander Jackson ... Davis, William Morris
- Davisean window ... Day and a Night at the Baths, A
- Day at the Races, A ... daylily
- daymark ... DDS
- DDT ... De dignitate et excellentia hominis
- De diis ... de Klerk, Frederik Willem
- De Kogge ... De måske egnede
- De materia medica ... De re aedificatoria
- De re anatomica ... De Vita Caesarum
- De vita contemplativa ... Dead, The
- Dead, The ... Dearborn, Emma
- Dearborn, Fort ... Death on the Pale Horse
- death penalty ... debt crisis
- debt forgiveness ... Decca
- Decca Records ... Declaration of the Rights of Woman and of the [Female] Citizen
- declarative language ... dee
- Dee, Joey and the Starliters ... Deering, Henrietta
- Deering, William ... DeFeo, Jay
- DeFeo, Mary Joan ... Degrés
- Degtyarev, Vasily ... Dekéleia
- Deken, Aagje ... Delaware, Thomas West, 12th Baron
- Delaware, University of ... Delinquency in a Birth Cohort
- Delinquent Boys: The Culture of the Gang ... Delphinus
- Delphinus delphis ... dementia paralytica
- dementia praecox ... Democracy, an American Novel
- Democrat Party ... Democratic Union for the Defense of African Interests
- Democratic Union of Liberation ... Demus, Otto
- Demuth, Charles ... dengue vaccine
- Dengyō Daishi ... density current
- density function ... Deogaon, Treaty of
- Deogarh ... depot trade
- depot, railroad ... Derichthyidae
- deringer ... Derviş Mehmed Zilli
- dervish ... Description du corps humain, La
- Description of a Good Wife ... desertization
- deserto dei Tartari, Il ... Desmoulins, Lucie-Simplice-Camille-Benoist
- Desna River ... Destutt de Tracy, Antoine-Louis-Claude, Comte
- desuggestopedia ... Detstvo
- Detstvo Nikity ... Deutsche Telekom AG
- Deutsche Turnkunst, Die ... development bank
- Development Bank of Southern Africa ... Devil’s Disciple, The
- Devil’s Disciple, The ... DeVry Institute of Technology
- devşirme ... Dhahab, Wādī Al-
- Dhahabī, al- ... dhess
- DHF ... diabasic texture
- Diabelli Variations, Op. 120 ... Dialeurodes citri
- Dialictus zephyrus ... Diamond Lil
- diamond microindenter ... diaplectic glass
- Diaporthales ... diatomic molecule
- diatomite ... Dice-K
- Dicenta, Joaquín ... Diclidurus albus
- Dicliptera ... Didascalia Apostolorum
- Didascalicon ... Diegueño
- Diehl, Geoff ... Dieudonné, Jean
- Dieudonné, Jean-Alexandre-Eugène ... diffusion thermoeffect
- diffusion transfer ... digital sound recording
- digital subscriber line ... Dilbert
- Dileita, Dileita Muhammad ... dimethylaminoethylbenzanilide
- dimethylbenzene ... Dingal
- Dingane ... diode
- diode ... Dioramas
- Diori, Hamani ... diplohaplontic life cycle
- diploid parthenogenesis ... Dire Dawa
- Dire Straits ... Directorate
- Directorate of State Security ... Disbrowe, John
- disc ... Discourse on the Sciences and the Arts, A
- Discourse on the Ten Sagely Diagrams ... dish
- dish antenna ... dispersion
- dispersion ... dissociative type hysterical neurosis
- Dissoi logoi ... districting
- Distrito Capital ... Divergent Series: Allegiant, The
- Divergent Series: Insurgent, The ... Divino Espírito da Fortaleza
- divino Narciso, El ... Diyār Muḍar
- Diyār Rabīʿah ... Dmanisi
- DMAPP ... do-it-yourself
- doab ... Doctor Heidegger’s Experiment
- Doctor in Spite of Himself, The ... Dodeskaden
- Dodesukaden ... dogbane beetle
- Dogberry ... Doktor und Apotheker
- Doktorns pojk’ ... Dolle
- Dollfus, Audouin ... dome vizier
- dome, volcanic ... Dominion Arboretum and Botanic Garden, Central Experimental Farm
- Dominion Day ... Don’t Let the Sun Go Down on Me
- Don’t Look Back ... Donetsky Basseyn
- Donetskyy Baseyn ... Donor-advised funds: A way to give to charity and get a tax break
- Donoso, José ... Doppler weather radar
- Doppler, Christian ... Doroshenko, Peter
- Doroshenko, Petro ... Dosadi Experiment, The
- dosage ... Double Falsehood
- Double Falsehood; or, The Distressed Lovers ... Doubleday, Frank Nelson
- Doubleday, Page & Company ... Douglas, Melvyn
- Douglas, Michael ... Dow Jones Composite Average
- Dow Jones Industrial Average ... Downton Abbey
- Downton Abbey ... Dr. Strange
- Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb ... Dragon Kings
- Dragon Lady ... dramatist
- dramaturge ... dream incubation
- Dream is Life, A ... Drenova, Aleks Stavre
- Drente ... DRI
- dribble ... driving wagon
- driving while intoxicated ... Drosophila willistoni
- Drosophilidae ... Drumline
- Drummond Island ... dry processing
- dry quenching ... Du Barry Was a Lady
- Du Barry, Madame ... Duarte, Fausto Castilho
- Duarte, José Napoleon ... Duché, André
- Duché, Andrew ... Dudley, Sir Robert
- Dudley, Thomas ... duiker
- duileasc ... dulisk
- Duliujian River ... Dumplin’
- dumpling ... Dundee, University of
- Dunderlands ... Dunn, Walter
- Dunn, Winfield ... Duppa, Darrell
- Dupplin Moor, Battle of ... Durban
- Durban Stadium ... Dusklands
- dusky bush baby ... Dutilleux, Henri Paul Julien
- Dutongjian lun ... Dwan, Joseph Aloysius
- Dwane, Ted ... Dybvig, Philip
- Dybwad, Gunnar ... dynamic-optimizing control
- Dynamic-Tension ... Džambul
- Dzaudzhikau ... Dzyubin, Eduard Georgiyevich
