China 
Africa 
- Drug-eluting stent
- DrugBank
- Drugs
- Drum
- Drum brakes
- Drum drying
- Drumlins
- Drupal
- Drusen
- Druses
- Dry cask storage
- Dry cell
- Dry cleaning
- Dry dam
- Dry distillation
- Dry dock
- Dry etching
- Dry eye
- Dry eye syndrome
- Dry gas
- Dry gas seal
- Dry lake
- Dry lubricants
- Dry matter
- Dry mouth
- Dry plate
- Dry ports
- Dry powder inhaler
- Dry reforming
- Dry skin
- Dry stone
- Dry water
- Dry weight
- Dry well
- Dry-ice blasting
- Dry-powder inhaler
- Drying
- Drying oil
- Drying tube
- Dryland salinity
- Dryness
- Drywall
- Dual
- Dual basis
- Dual graph
- Dual lattice
- Dual linear program
- Dual loop
- Dual modular redundancy
- Dual module
- Dual numbers
- Dual pair
- Dual phase steel
- Dual polyhedron
- Dual problem
- Dual quaternions
- Dual space
- Dual system
- Dual-clutch transmission
- Dual-energy x-ray absorptiometry
- Dual-mass flywheel
- Dual-phase steel
- Dual-polarization interferometry
- Dual-ported RAM
- Dual-use
- Duality
- Duality gap
- Dubins path
- Dublin Core
- Duck curve
- Ductal carcinoma
- Ducted fans
- Ducted propeller
- Ductile
- Ductile iron
- Ductile iron pipe
- Ductility
- Ductwork
- Duffing equation
- Dufour effect
- Dugout
- Duhamel's integral
- Dulong-Petit law
- Duluth Complex
- Dumas method
- Dummy load
- Dummy variable
- Dump truck
- Dumper
- Dunes
- Dunite
- Dunn Index
- Duodenal
- Duodenal bulb
- Duplex
- Duplex stainless steel
- Duplexer
- Duqu
- Dura mater
- Durability
- Duralumin
- Durene
- Duricrust
- Durometer
- Durotaxis
- Dusk
- Dust
- Dust abatement
- Dust collection system
- Dust collector
- Dust explosions
- Dust mite allergy
- Dust mites
- Dustiness
- Dusty plasma
- Dutch standards
- Duty cycle
- Dvorak
- Dyadic product
- Dyadics
- Dye lasers
- Dye tracing
- Dye-sensitized solar cell
- Dyeing
- Dyes
- Dymola
- Dynamic Adaptive Streaming over HTTP
- Dynamic Monte Carlo method
- Dynamic array
- Dynamic balance
- Dynamic braking
- Dynamic compaction
- Dynamic consent
- Dynamic covalent chemistry
- Dynamic data
- Dynamic decision-making
- Dynamic demand
- Dynamic dispatch
- Dynamic electrophoretic mobility
- Dynamic equilibrium
- Dynamic frequency scaling
- Dynamic imaging
- Dynamic increase factor
- Dynamic linking
- Dynamic loading
- Dynamic mechanical analysis
- Dynamic method
- Dynamic mode decomposition
- Dynamic modulus
- Dynamic network analysis