- Damage
- Damage Assessment
- Dampers
- Damping
- Dams
- Data
- Data Analysis
- Data Processing
- Data Sheets
- Databases
- Day Care Centers
- Deaf
- Death
- Death Notification
- Death Rates
- Debriefings
- Debris
- Debris Burning
- Decision Information Distribution System
- Decision Making
- Decision Support Systems
- Decompression
- Decontamination
- Deepwater Horizon Oil Spill
- Defects
- Defense Industry
- Defense Support of Civil Authorities
- Defensive Landscaping
- Defibrillation
- Defibrillators
- Deforestation
- Dehumidifiers
- Dehydration
- Delegation
- Delphi Method
- Deluge Valves
- Democracy
- Demographics
- Demography
- Demolition
- Demotions
- Dentistry
- Deployment
- Depression
- Deregulation
- Deserts
- Design Criteria
- Designs
- Detectors
- Detergents
- Deterrence
- Detonation
- Detoxification
- DFO
- Diabetes
- Diagnoses
- Diagnosis
- Dialysis
- Diction
- Dictionaries
- DIDS
- Diesel Engines
- Diesel Fuels
- Diet
- Diplomats
- Directories
- Disability
- Disabled
- Disarmament
- Disaster Assistance
- Disaster Field Offices
- Disaster Housing
- Disaster Management
- Disaster Medical Assistance Teams
- Disaster Medicine
- Disaster Planning
- Disaster Plans
- Disaster Preparedness
- Disaster Recovery
- Disaster Relief
- Disaster Research
- Disaster Response
- Disaster Scenarios
- Disasters
- Discipline
- Discrimination
- Disease Vector
- Diseases
- Dismissal
- Dispatchers
- Dispatching
- Dispensaries
- Displaced Persons
- Distance Education
- Distress Calls
- Diversity
- Diving
- Diving Equipment
- Divorce
- DMAT