China 
Africa 
- Digital delay generators
- Digital divide
- Digital down converter
- Digital ecosystem
- Digital fabrication
- Digital filters
- Digital footprint
- Digital geometry
- Digital goods
- Digital health
- Digital identity
- Digital image
- Digital image processing
- Digital imaging
- Digital inclusion
- Digital integration
- Digital learning
- Digital library
- Digital literacy
- Digital manufacturing
- Digital mapping
- Digital media
- Digital microfluidics
- Digital microscope
- Digital mockups
- Digital natives
- Digital pathology
- Digital potentiometer
- Digital protective relay
- Digital prototyping
- Digital radio
- Digital radiography
- Digital sensors
- Digital signage
- Digital signals
- Digital signature
- Digital signature algorithm
- Digital storage oscilloscope
- Digital television
- Digital textile printing
- Digital thread
- Digital topology
- Digital transformation
- Digital watermarking
- Digital-to-analog converter
- Digitalis
- Digitization
- Digits
- Diglycerides
- Diglycidyl ether
- Diglyme
- Digoxin
- Dihedral
- Dihedral angle
- Dihedral group
- Dihydrofolate reductase
- Dihydrokavain
- Dihydrolipoamide
- Dihydrolipoamide dehydrogenase
- Dihydrolipoic acid
- Dihydropteroate synthase
- Dihydropyridine
- Dihydrotestosterone
- Dihydroxyacetone
- Dihydroxyacetone phosphate
- Dihydroxybenzenes
- Dihydroxylation
- Diimide
- Diimine
- Diiodomethane
- Diisobutyl phthalate
- Diisodecyl phthalate
- Diisononyl phthalate
- Diisopropyl ether
- Diisopropylamine
- Dijkstra's algorithm
- Dike swarm
- Dikes
- Diketones
- Diketopiperazine
- Dilatancy
- Dilatant
- Dilated cardiomyopathy
- Dilation
- Dilatometry
- Dilbit
- Dilemma
- Diluent
- Dilution
- Dilution cloning
- Dilution factor
- Dilution ratio
- Diluvium
- Dimedone
- Dimension
- Dimension stone
- Dimensional analysis
- Dimensional metrology
- Dimensional reduction
- Dimensional stability
- Dimensional weight
- Dimensionality reduction
- Dimensionless
- Dimensionless quantity
- Dimerization
- Dimers
- Dimethoate
- Dimethoxyethane
- Dimethyl carbonate
- Dimethyl disulfide
- Dimethyl ether
- Dimethyl fumarate
- Dimethyl methylphosphonate
- Dimethyl phthalate
- Dimethyl selenide
- Dimethyl sulfide
- Dimethyl sulfoxide
- Dimethyl terephthalate
- Dimethyl-p-phenylenediamine
- Dimethylacetamide
- Dimethylallyl pyrophosphate
- Dimethylamine
- Dimethylaniline
- Dimethyldithiocarbamate
- Dimethylformamide
- Dimethylglycine
- Dimethylglyoxime
- Dimethylhydrazine
- Dimethylurea
- Diminishing returns
- Dimmers
- Dimorphic
- Dimples
- Dinghy
- Dinitroaniline
- Dinitrogen pentoxide
- Dinitrogen tetroxide
- Dinitrotoluene
- Dioctyl adipate
- Dioctyl sebacate
- Dioctyl sodium sulfosuccinate
- Diode
- Diode bridge
- Diode-array detection
- Diode-pumped solid-state lasers
- Diols
- Diophantine approximation
- Diophantine equations
- Diopside
- Diopter