China 
Africa 
- DXP synthase
- DaaS
- Dabco
- Dacite
- Dacron
- Dactinomycin
- Daemons
- Daidzein
- Daidzin
- Daily cover
- Daily value
- Daisy
- Dakota Access Pipeline
- Dales
- Dalton
- Dalton's law
- Dalvik
- Dam failure
- Dam removal
- Damage mechanics
- Damage threshold
- Damage tolerance
- Dammarane
- Damp
- Damp proofing
- Damped wave
- Damper winding
- Dampers
- Damping
- Damping capacity
- Damping factor
- Damping matrix
- Damping torque
- Dams
- Dandruff
- Dangerous goods
- Dangling bonds
- Dansyl chloride
- Dante
- Dap
- Daptomycin
- Darboux frame
- Darboux integral
- Darcy
- Darcy's law
- Dark adaptation
- Dark current
- Dark data
- Dark energy
- Dark fermentation
- Dark matter
- Dark patterns
- Dark septate endophyte
- Dark silicon
- Dark skin
- Darknet
- Darlington transistor
- Darrieus wind turbine
- Dart
- Dartmouth workshop
- Dartos
- Darwin Core
- Darwinism
- Dashpots
- Dask
- Data Protection Act 1998
- Data access
- Data access layer
- Data acquisition
- Data aggregation
- Data analysis
- Data anonymization
- Data architecture
- Data as code
- Data assimilation
- Data at rest
- Data augmentation
- Data breach
- Data buffer
- Data centers
- Data circuit-terminating equipment
- Data classification
- Data cleansing
- Data collection
- Data communication
- Data compression
- Data consistency
- Data conversion
- Data corruption
- Data cube
- Data curation
- Data deduplication
- Data degradation
- Data dictionary
- Data dissemination
- Data domain
- Data dredging
- Data element
- Data engineering
- Data entry
- Data exchange
- Data exhaust
- Data exploration
- Data extraction
- Data file
- Data fusion
- Data generating process
- Data governance
- Data grid
- Data hierarchy
- Data hub
- Data in use
- Data independence
- Data infrastructure
- Data integration
- Data integrity
- Data lakes
- Data lineage
- Data link
- Data link layer
- Data literacy
- Data localization
- Data loggers
- Data loss
- Data management
- Data management plans
- Data mapping
- Data marts
- Data masking
- Data migration
- Data mining
- Data model
- Data modeling
- Data monetization
- Data parallelism
- Data plane
- Data points
- Data preparation
- Data preprocessing
- Data preservation
- Data processing
- Data proliferation
- Data protection
- Data protection officer
- Data publishing
- Data quality
- Data rate
- Data recovery
- Data reduction
- Data redundancy