| ICDO | International Classification of Diseases for Oncology | 国际肿瘤学疾病分类 |
| ICDO | International Civil Defense Organization | 国际民防组织 |
| ICDO | Interdepartementale Commissie Duurzame Ontwikkeling (Belgium) | 跨部门委员会Duurzame Ontwikkeling(比利时) |
| ICDO | International Classification of Diseases for Oncology (coding system) | 国际肿瘤学疾病分类(编码系统) |