| IWO | Impotence World Institute | 阳痿世界研究所 |
| IWO | I Will Owe (like IOU or bill me later) | 我会欠你的(比如欠条或以后给我账单) |
| IWO | I Want One | 我想要一个 |
| IWO | In Way Of | 在方式上 |
| IWO | Income Withholding Order | 收入预扣令 |
| IWO | Interim Waste Operations | 临时废物作业 |
| IWO | Inter-Company Work Orders | 公司间工单 |
| IWO | Intelligence Watch Officer | 情报值班官 |
| IWO | Industrial, Work and Organizational (psychology) | 工业、工作和组织(心理学) |
| IWO | Independent World Order | 独立世界秩序 |
| IWO | Inland Waterway Operation | 内陆航道运营 |
| IWO | Interagency Work Order | 机构间工作指令 |
| IWO | International Workers Order (1930-39) | 国际工人令(1930-39) |
| IWO | Internet Wrestling Organization | 互联网摔跤组织 |
| IWO | Internal Wrestling Organization | 内部摔跤组织 |