- Data Mining
- Data-Warehouses
- Database for Arabic Handwritten text-AHDB
- Database for Handwritten Arabic-ADBase
- dB Sound Pressure LeveldBspl
- Decibel-dB
- Decision Tree
- Deep Learning
- Defence Advanced Research Projects Agency-DARPA
- Degraded Text
- Deletion Errors
- Dendral
- Dependency Parsing
- Depth First
- Descriptive Adequacy
- Descriptive Questions
- Determiner Phrase-DP
- Deterministic
- Deterministic Parsing
- Determinization
- Diacritization
- Dialog Management Systems
- Dictation Engine
- Dictionary
- Dictionary Production System
- Dictionary Production-Publishing System
- Dictionary Publishing System
- Dictionary Writing System
- Different Components
- Digital Image
- Digital Signal Processing-DSP
- Digital Signals
- Digitization
- Discourse Integration
- Discrete
- Discrete Cosine Transform
- Discrete Density
- Discrete Wavelet Transform-DWT
- Discussion Questions
- Disguised Plagiarism
- Distributed Processing
- Divide and Conquer
- Document Classification
- Document Classification and Clustering
- Document Clustering
- Document Frequency
- Document Management Systems-DMS
- Document Summarization
- Domain-Domain
- Downtoners
- Downtoning
- Duration
- Dynamic Programming