| AIO | African Insurance Organization | 非洲保险组织 |
| AIO | American for Indian Opportunity | 美洲人争取印第安人机会组织 |
| AIO | ALU Input and Output | 运算器输入与输出 |
| AIO | Associazione Italiana Odontoiatri | 意大利牙病协会 |
| AIO | Activities, Interests, and Opinions | 活动、兴趣和意见 |
| AIO | American Indian Opportunities | 美洲印第安人的机会 |
| AIO | Aerospace Information Operations | 航空航天信息作战 |
| AIO | Asynchronous Input Output | 异步输入输出 |
| AIO | Acquisition Integration Office | 收购整合办公室 |
| AIO | Americans for Indian Opportunity | 美国人争取印第安人的机会 |
| AIO | Air Interdiction Officer | 空中拦截官 |
| AIO | Amiga Information Online | Amiga信息在线 |
| AIO | Advertising Institutions And Operations | 广告机构和运营 |
| AIO | Aikido Instructors Organization | 合气道教练组织 |
| AIO | amyloid of immunoglobulin origin | 免疫球蛋白来源的淀粉样蛋白 |
| AIO | Adventures In Odyessy | 奥德耶西历险记 |
| AIO | ATCCS Integration Office | ATCCS集成办公室 |
| AIO | Activities Interests And Opinions | 活动兴趣和意见 |
| AIO | APL file transfer format file | APL文件传输格式文件 |
| AIO | Australian Imagery Organisation | 澳大利亚图像组织 |
| AIO | Arecibo Ionospheric Observatory (Puerto Rico) | 阿雷西博电离层观测站（波多黎各） |
| AIO | Anthropological Index Online (monthly bibliographic references to over 700 periodicals in the British Museum's Museum o | 人类学指标在线(每月700期刊文献引用在大英博物馆的博物馆的人类图书馆) |
| AIO | Advances In Osteoporosis | 骨质疏松症研究进展 |
| AIO | Assistent in Opleiding | 协助运营 |
| AIO | Asynchronous Input/Output | [电] 异步输出/输入 |
| AIO | Assistant in Opleiding | Opleiding助理 |
| AIO | Activities, Interests and Opinions | 活动、兴趣和意见 |
| AIO | Analog Input/Output | 模拟输入/输出 |
| AIO | All in Order (police reports) | 一切正常（警方报告） |
| AIO | All in One | 多功能一体机 |
| AIO | Air Intelligence Officer | 空军情报官 |
| AIO | Assistant Immigration Officer | 助理入境事务主任 |
| AIO | Adventures in Odyssey | 奥德赛冒险记 |
| AIO | Action Information Organization | 行动信息组织 |
| AIO | Acadia Institute of Oceanography | 阿卡迪亚海洋研究所 |