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