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Contents 1 Acronyms 1.1 Medical 1.2 Military 1.3 Geographic areas

IDF or idf may stand for:

"idf" can be:

• short for "identifier"
• short for "identification"

[edit] Acronyms

• Intel Developer Forum
• Intermediate Data Format, a file format for transferring 3D electronics data between programs
• Intermediate distribution frame (in Telephony and Computer networking) - a cable rack that interconnects and manages the telecommunications wiring between a main distribution frame (MDF) and workstation devices
• Inverse Document Frequency, a factor in the tf–idf principle, used in Information Retrieval
• Invention Disclosure Form, a precursor to filing a patent application
• The International DOI Foundation developing Digital Object Identifier (DOI)
• International Diabetes Federation

[edit] Medical

• Immune Deficiency Foundation
• International Diabetes Foundation

[edit] Military

• the Irish Defence Forces
• the Israel Defense Forces
• the Iceland Defense Force

• Indigenous Defence Fighter, also known as AIDC F-CK-1 Ching-kuo, a light fighter aircraft by the Aerospace Industrial Development Corporation (AIDC) for the Republic of China (Taiwan) Air Force
• Indirect fire

[edit] Geographic areas

• Île-de-France (province) (historical) of France
• Île-de-France (région) of France

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