I don't give a f**k IDK – (i) I don't know IDKIBTI – I don't know, I'm black, that's it IDL – (i) Interface Definition Language IDN – (s) Indonesia (ISO 3166 trigram) ido – (s) Ido language (ISO 639-2 code) IDR – (s) Indonesian rupiah (ISO 4217 currency code) IDTS – (i) I don't think so IE i.e. – (i) id est (Latin, roughly "that is") ie – (s) Interlingue language (ISO 639-1 code) IE – (i) Indo-European languages – Internet Explorer – (s) Ireland (ISO 3166 digram) – Iced Earth IEA – (i) International Energy Agency IEC – (i) International Electrotechnical Commission IED – (i) Improvised Explosive Device IEEE – (p) Institute of Electrical and Electronics Engineers ("I triple-E") IELTS – (a) International English Language Testing System IER – (i) Information Exchange Requirement IET – (i) Institution of Engineering and Technology IET – (ii) Initial Entry Training IETF – (i) Internet Engineering Task Force IEW – (i) Intelligence and Electronic Warfare IF IFAB – (i) International Football Association Board IFAH – (i) International Federation for Animal Health IFAP – (i) International Federation of Agricultural Producers, (i) International Fashion Academy Pakistan IFC – (i) International Finance Corporation (part of the World Bank) – (a) Independent Film Channel IFF – (i) Identification, Friend or Foe – Individually Fresh Frozen – International Flavors and Fragrances IFFN – (i) Identification, Friend, Foe, or Neutral IFO – (i) Identified Flying Object (see also UFO) IFOR – (p) UN Implementation Force – (i) Institute for Operations Research – International Fellowship of Reconciliation IFOV – (i) Instantaneous Field of View IFPI – (i) International Federation of Phonographic Industries IFR – (i) Instrument Flight Rules IFRB – (i) International Frequency Registration Board IFV – (i) Infantry Fighting Vehicle IG ig – (s) Igbo language (ISO 639-1 code) IG – (i) Inspector General IGFA – International Game Fish Association IGNOU – (a) Indira Gandhi National Open University IGS – (i) International Ground Station IGY – (i) Israeli Gay Youth – International Geophysical Year IH IHÉS – (i) Institut des Hautes Études Scientifiques (French, Institute of Advanced Scientific Studies) IHH – (i) Idiopathic Hypogonadotropic Hypogonadism IHO – (i/a) International Hydrographic Organization IHOP – (i/a) International House of Pancakes, the original name of this American restaurant chain ("EYE-hop") IHR – (i) Institute for Historical Review IHSI – Institutum Historicum Societatis Iesu (Jesuit Historical Institute) II ii – (s) Sichuan