DCD is a
three-letter abbreviation with multiple meanings, including:
- Data Carrier Detect, a term used with modems and the RS-232 interface.
- Dead Can Dance is an originally Australian eclectic band, popular among goth music listeners.
- Def Con Dos is a Spanish rap metal band.
- Diamond Comic Distributors is the largest distributor (not publisher) of comic books in the United States
- Developmental Coordination Disorders, also known as Developmental Dyspraxia, are characterized as being "clumsy" or "awkward".
- Detroit Country Day School is a private school without any religious affiliation in Beverly Hills, Michigan.
- Design class diagram, a diagram used in software engineering.
- Device Capability Discovery , a protocol to establish the functionality supported by a mobile handset's hardware and software.
- Donation after Cardiac Death, an approach to organ donation, distinguished from donation after brain death.
- Dicyandiamide, a fertilizer.
- Dual Currency Deposit, a derivative instrument.