| IAN | Idiopathic aseptic necrosis | 自发性无菌性坏死 |
| IAN | Integrated Analog Network | 综合模拟网 |
| IAN | Irregularly Activated Network | 不规则激活网络 |
| IAN | International Association of Nanotechnology | 国际纳米技术协会 |
| IAN | Independent Administration Network | 独立管理网络 |
| IAN | International Affairs Network | 国际事务网 |
| IAN | Instructional Application Network | 教学应用网络 |
| IAN | Instrumentation & Automation News | 仪表及自动化的消息 |
| IAN | ich auch nicht | 我不知道 |
| IAN | International Accounting Network | 国际会计网络 |
| IAN | i am nothing | 我什么都不是 |
| IAN | I Am Nobody | 我是无名之辈 |
| IAN | Instituto Agronômico do Norte | Instituto Agronômico do Norte |
| IAN | Ianuarius (Latin: January) | Ianuarius(拉丁语:一月) |
| IAN | Intelligent Access Network (ADC) | 智能接入网(ADC) |
| IAN | Kiana, Alaska USA | 美国阿拉斯加州基纳 |
| IAN | Internet Access Notification | Internet访问通知 |
| IAN | Installation After Next | 下一步后安装 |
| IAN | Imperial Andermani Navy (Honor Harrington science fiction novels) | 帝国安德马尼海军(荣誉哈灵顿科幻小说) |
| IAN | Interactive Affiliate Network | 互动联盟网络 |
| IAN | Instituto Agronomico Nacional (Paraguay) | 国家农业经济学研究所(巴拉圭) |
| IAN | Incident Area Network | 事故区域网络 |
| IAN | Instituto Argentino de NavegaciÓn | Instituto Argentino de NavegaciÓn |
| IAN | Internet Area Network | Internet局域网 |