DCI
DCI stands for:
- Data Context Interaction , architecture pattern for structuring software development
 - DCI Database for Commerce and Industry , listed company from Starnberg
 - Decimomannu military airfield , in the south of the Italian Mediterranean island of Sardinia, is mainly used by the air forces of Italy and Germany for training purposes according to the IATA code
 - Decompression illness , see decompression sickness
 - Defense for Children International , an independent NGO founded in the International Year of the Child (1979)
 - denominatio communis internationalis (Latin), see international non-proprietary name, the public domain name given by the World Health Organization for an active pharmaceutical ingredient
 - Detective Chief Inspector , a rank in the Police Department in the United Kingdom and Northern Ireland
 - Development Co-operation Instrument , the financing instrument for EU development policy
 - Diesel Common Rail Injection , English for “Diesel Common Rail Injection ” - Abbreviation for diesel engines from Renault and Nissan
 - Digital Cinema Initiatives , a joint venture of the major Hollywood studios for a DRM-secured standard for digital cinema
 - Direct Controlled Injection , fertilizing according to the cultan principle on lawns
 - Director of Central Intelligence , the former director of US intelligence
 - Display Control Interface , an API specified by Microsoft and Intel to enable software or device drivers under Windows 3.1 to have orderly and fast access to the image memory
 - Drum Corps International , international drummers association
 - the tournament organization of the company Wizards of the Coast, especially for the game Magic: The Gathering, see tournaments in Magic: The Gathering
 
DC.I stands for:
- Fokker DC.I , Dutch military aircraft from Fokker