D
- DA: Dearness Allowance; Daily Allowance
- DAVP: Directorate of Advertising and Visual Publicity
- DC: Deputy Commissioner; Direct Current in Electricity
- DDT: Dichloro-Diphenyl Trichloro-ethane (disinfectant)
- DIN: Director Information Number
- DM: District Magistrate; Deputy Minister
- DMIC: Delhi-Mumbai Industrial Corridor
- DMK: Dravida Munnetra Kazhagam (a regional political party of Tamil Nadu)
- DNA: de-oxyribonucleic acid
- DO: Demi-official (letter)
- DOD: Department of Ocean Development
- DPEP: District Primary Education Programme
- DPI: Director of Public Instruction
- DRAM: Dynamic Random Access Memory
- DRDO: Defence Research and Development Organisation
- DST: Daylight Saving Time
- DRES: Department of Renewable Energy Sources
- DTH: Direct to Home (broadcasting)