| IAC | in any case | 总之 |
| IAC | Immunoaffinity Chromatography | 免疫亲和色谱法 |
| IAC | initial approved cost | 批准的控制估算 |
| IAC | Inter-Application Communication | 应用程序内部通讯 |
| IAC | Image Attenuation Coefficient | 图像衰减系数 |
| IAC | ISDN Access Control | ISDN接入控制 |
| IAC | Idle Air Control | 怠速控制 |
| IAC | Industry Advisory Conference | 行业咨询公会 |
| IAC | Indian Airlines Corporation (ICAO code) | 印度航空公司(ICAO代码) |
| IAC | International Association for Cybernetics | 国际控制论协会 |
| IAC | Islamic Association of China | 中国伊斯兰协会 |
| IAC | Investors Association of Canada | 加拿大投资者协会 |
| IAC | International Association for Counselling | 国际咨询协会 |
| IAC | Idaho Association of Counties | 爱达荷州县协会 |
| IAC | Immunization Action Coalition | 免疫接种行动联盟 |
| IAC | International Agricultural Centre | 国际农业中心 |
| IAC | International Astronautical Congress | 国际宇航大会 |
| IAC | International Armaments Cooperation | 国际军备合作 |
| IAC | International Armoring Corporation (Ogden, Utah) | 国际装甲公司(犹他州奥格登) |
| IAC | Internal Audit Committee | 内部审计委员会 |
| IAC | Information Assurance and Compliance | 信息保证和合规性 |
| IAC | Instituto Colombiano de CodificaciÓn y AutomatizaciÓn Comercial (BogotÁ, Colombia) | Instituto Colombiano de CodificaciÓn y AutomatizaciÓn Comercial (BogotÁ, Colombia) |
| IAC | International Auctioneer Championship | 国际拍卖师锦标赛 |
| IAC | Idaho Accelerator Center (Idaho State University, Pocatello, ID) | 爱达荷州加速器中心(爱达荷州立大学,爱达荷州波卡特洛) |
| IAC | Industry Advisory Conference (Ul) | 行业咨询会议(Ul) |
| IAC | International Agricultural Center (The Netherlands) | 国际农业中心(荷兰) |
| IAC | Independent Action Center | 独立行动中心 |
| IAC | International Accounting Centre | 国际会计中心 |
| IAC | Iraqi Assistance Center | 伊拉克援助中心 |
| IAC | Initial Alignment Control | 初始对齐控制 |
| IAC | International Affairs Committee | 国际事务委员会 |
| IAC | Intelligence Analysis Center | 情报分析中心 |
| IAC | International Academy Council | 国际学院理事会 |
| IAC | Institute for Antiquity and Christianity | 古代与基督教研究所 |
| IAC | International Access Code | 国际访问代码 |
| IAC | International Academy of Cytology | 国际细胞学学会 |
| IAC | International Academy of Ceramics | 国际陶瓷学会 |
| IAC | isovolumic contraction | 等容收缩 |
| IAC | Industry Advisory Council | 行业咨询委员会 |
| IAC | Interstate Athletic Conference | 州际田径大会 |
| IAC | Industrial Analysis Centre (Canada) | 工业分析中心(加拿大) |
| IAC | Irish Air Corps | 爱尔兰空军 |
| IAC | Instructor Aircraft Commander (military pilot course) | 教练飞机指挥官(军事飞行员课程) |
| IAC | Interapplication Communication (Apple) | 应用程序间通信(Apple) |
| IAC | International Academy of Consciousness | 国际意识学院 |
| IAC | Instrument Alignment Cube | 仪表校准立方体 |
| IAC | I Am Confused | 我很困惑 |
| IAC | Industrial Arbitration Court (Singapore) | 工业仲裁法院(新加坡) |
| IAC | Indiana Arts Commission | 印第安纳艺术委员会 |
| IAC | In Awhile Crocodile | 《可怕的鳄鱼》 |
| IAC | Interagency Committee on School Construction | 学校建设机构间委员会 |
| IAC | Instituto Agronomico Campinas (Brazil) | 坎皮纳斯农业经济学研究所(巴西) |
| IAC | Independent Anglican Church (Canada Synod) | 独立圣公会(加拿大议会) |
| IAC | Investment Advice Certificate | 投资建议证书 |
| IAC | Intertribal Agricultural Council | 部落间农业委员会 |
| IAC | International Arms Cooperation | 国际武器合作 |
| IAC | Intelligence Analysis Cell | 情报分析单元 |
| IAC | Intelligent Automation Corporation (San Diego, California) | 智能自动化公司(加利福尼亚州圣地亚哥) |
| IAC | Inbound Approach Course | 入站进场课程 |
| IAC | Instrument Approach Chart (aviation) | 仪表进近图(航空) |
| IAC | Investment Advisory Committee | 投资咨询委员会 |
| IAC | Israeli Awareness Commission | 以色列意识委员会 |
| IAC | Industry Advisory Committee | 工业咨询委员会 |
| IAC | Idle Air Control (automotive) | 怠速空气控制(汽车) |
| IAC | Interim Acceptance Criterion | 临时验收标准 |
| IAC | Instantaneous Airborne Count | 瞬时机载计数 |
| IAC | International Antarctic Centre (New Zealand) | 国际南极中心(新西兰) |
| IAC | Indirect Air Carrier | 间接航空公司 |
| IAC | Infostructure Architecture Council (USAF) | 信息结构体系结构委员会(USAF) |
| IAC | Identified Alien Craft (UFO community's slang for a UFO operated by US Government) | 识别外来工艺(不明飞行物团体的俚语,指由美国政府的一个不明飞行物) |
| IAC | Industrial Accident Commission | 工业事故委员会 |
| IAC | Instrument on A Card | 卡片上的仪器 |
| IAC | Instituto de AstrofÍsica de Canarias (Spanish: Astrophysics Institute of the Canary Islands) | Instituto de AstrofÍsica de Canarias (Spanish: Astrophysics Institute of the Canary Islands) |
| IAC | Internet Advisory Committee (Canada) | 互联网咨询委员会(加拿大) |
| IAC | Internet Access Coalition | 互联网接入联盟 |
| IAC | Issuer Action Code(s) | 发卡机构操作代码 |
| IAC | Independent Assurance Contractor | 独立保证承包商 |
| IAC | Institut fÜr Anorganische Chemie (Kiel, Germany) | Institut fÜr Anorganische Chemie (Kiel, Germany) |
| IAC | Internal Auditory Canal | 内耳道 |
| IAC | Image Analysis Center | 图像分析中心 |
| IAC | Iraq Action Coalition | 伊拉克行动联盟 |
| IAC | International Advisory Committee (PSSC) | 国际咨询委员会(PSSC) |
| IAC | ISDN Access Controller | ISDN接入控制器 |
| IAC | Inmate Advisory Committee | 囚犯咨询委员会 |
| IAC | Inter Agency Committee | 机构间委员会 |
| IAC | Independent Artists Company | 独立艺术家公司 |
| IAC | Integration, Assembly & Checkout | 集成、装配、检测 |
| IAC | Industrial Application Center | 工业应用中心 |
| IAC | Initial Approach Course | 最初进场航向 |
| IAC | Intelligent Asynchronous Controller | 智能异步控制器 |
| IAC | International Aerobatic Club | 国际特技飞行俱乐部 |
| IAC | Infrastructure Advisory Committee | 基础设施咨询委员会 |
| IAC | Industries Assistance Commission | 工业辅导委员会 |
| IAC | Institute for Atmosphere and Climate (ETH Zurich) | 大气与气候研究所(苏黎世ETH) |
| IAC | It's A Crime (game) | 它是一种犯罪(游戏) |
| IAC | Indirect Adaptive Control | 间接自适应控制 |
| IAC | Intelligent Access Controller (Sprint) | 智能访问控制器(Sprint) |
| IAC | Interior-Aleutians Campus (University of Alaska Fairbanks) | 阿留申群岛内部校区(阿拉斯加大学费尔班克斯分校) |
| IAC | Instrução de Aviação Civil (Brasil) | Instrução de Aviação Civil (Brasil) |
| IAC | International Adoption Center | 国际收养中心 |