IDC may refer to:
== Businesses and organizations ==
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...