D (disambiguation)
- "D" Is for Deadbeat
- A Scanner Darkly
- ATC code D
- Aspartic acid
- Chord names and symbols (popular music)
- Cohen's d
- Count Dracula
- D
- D (Daryl Hall album)
- D (Deuter album)
- D (Los Angeles Railway)
- D (New York City Subway service)
- D (Os Paralamas do Sucesso album)
- D (White Denim album)
- D (band)
- D (film)
- D (grade)
- D (musical note)
- D (programming language)
- D (single album)
- D (video game)
- D Line (Los Angeles Metro)
- D Magazine
- D Records
- D River
- D band (disambiguation)
- D battery
- D major
- D meson
- D minor
- D region
- D' (disambiguation)
- D- All Things Digital
- D-Company
- D. (disambiguation)
- D50 (film)
- DTrace
- Darshan (Kannada actor)
- Daughter
- Debye
- Debye–Waller factor
- December
- Dee (disambiguation)
- Defense (sports)
- Delirious?
- Demand
- Democratic Party (United States)
- Denarius
- Detlef Soost
- Detroit
- Deuteron
- Dextrorotation
- Dhanush
- Diarrhea
- Died
- Diffusion coefficient
- Dingir
- Diode
- Dioptre
- Divisor function
- Domashny
- Dominion Resources
- D♯ (disambiguation)
- Electric displacement field
- Exterior derivative
- Federal Reserve Bank of Cleveland
- Filetab-D
- Haplogroup D (mtDNA)
- Haplogroup D-M174
- Hugh Darwen
- Initial D
- Line D (Buenos Aires Underground)
- List of military time zones
- Marco Polo (Doctor Who)
- MassHunter
- Media–Sharon Hill Line
- Mitsubishi Electric
- Nara Line (JR West)
- Number
- Penny (British pre-decimal coin)
- Pet Shop of Horrors
- Playing to Win (Little River Band album)
- Roman numerals
- Schubert Thematic Catalogue
- Steinway D-274
- Substance D
- Tenacious D
- Tesla Model D
- Testeagles
- The D (disambiguation)
- Trusted Computer System Evaluation Criteria
- Vampire Hunter D
- Vitamin D
- Voiced alveolar stop