IDC may refer to:

Businesses and organizations[link]

• Industrial Development Corporation, also known as Castle Grande, an Arkansas company involved in the Whitewater political controversy
• Interactive Data Corporation (NYSE symbol IDC), a financial services company
• International Data Corporation, a market research company
• InterDigital Communications, a telecommunications company
• Interdnestrcom, a mobile telephone broadband provider in Transnistria, Moldova
• International Detention Coalition, a non-government organization (NGO) advocating for human rights
• International Development Collaborative, a non-profit dedicated to social entrepreneurship in developing countries
• Invensys Development Centre, a global common software development centre
• Israel Development Center, an Intel Corporation development center

Schools[link]

• Imperial Defence College, former name of the Royal College of Defence Studies, a British military academy
• Industrial Design Centre, IIT Bombay
• Institut de cognitique, a school of engineering in France
• Institute of design and construction, a technical school in Brooklyn, NY
• Interdisciplinary Center, a college in Herzliya, Israel

Government[link]

• Indigent Defense Coordinator, a function associated with public defenders

Military[link]

• idc, post nominal letters used by graduates of an Imperial Defence College
• The Information Dominance Corps, a loosely-associated group of US Navy military information specialties

Medical[link]

• Dilated cardiomyopathy, a disease of the heart muscle
• Infiltrating ductal carcinoma, a type of breast cancer
• Indwelling Catheter, a tube inserted into the urinary bladder for drainage
• Interdigitating dendritic cells

Other uses[link]

• Insulation-displacement connector, a connector that pierces the insulation on a wire
• Indirect costs, in financial contexts, otherwise known as "facilities and administrative costs"
• Intelligent design Creationism, religious-based theories on the origin of life
• Internet data center, a facility run by a service provider to house computer systems and associated components for their customers
• Intangible Drilling Costs, an oil and gas industry term

Popular culture[link]

• Iris deactivation code, a fictional code sequence from the Stargate SG-1 and Stargate Atlantis TV series
• IDC (musician), UK recording artist/DJ/producer
• An initialism meaning "I don't care" in chat language

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