'''IAI''' is an acronym for:
* IAI alphabet, another name for Africa Alphabet * Iaido * Information Architecture Institute * Institute of Art and Ideas * Inter-American Institute for Global Change Research * International African Institute * International Association for Identification * Israel Aerospace Industries (''Ha-Taasiya Ha-Avirit'') * Islamic Army in Iraq * Independent Administrative Institution * Intelligent Actuator (International Automation Industry), Japanese robot maker * Istituto Affari Internazionali (Italian Institute of International Affairs) * Institute of Archaeologists of Ireland
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