| CDX | Cross-Domain Connectivity | 跨域连接 |
| CDX | Companion Dog Excellent (AKC Obedience Title) | 优秀陪伴犬（AKC服从称号） |
| CDX | Community Development Exchange (UK community development organization) | 社区发展交流（英国社区发展组织） |
| CDX | Apa Rated Plywood Sheathing Exposure 1 (construction plywood) | Apa额定胶合板护套暴露1（建筑胶合板） |
| CDX | Central Data Exchange | 中央数据交换 |
| CDX | Commercial Data Exchange | 商业数据交换 |
| CDX | Consiglio Dei Dieci (Venetian Republic secret service) | 迪埃奇参谋长（威尼斯共和国特勤局） |
| CDX | Cyber-Defense Exercise | 网络防御演习 |
| CDX | Credit Default Swap Index (finance) | 信用违约掉期指数（金融） |
| CDX | CS ChemDraw Drawing (file extension) | CS ChemDraw图纸（文件扩展名） |
| CDX | Companion Dog Excellent | 陪伴犬优秀 |
| CDX | Counterdrug Executive Secretariat | 禁毒执行秘书处 |
| CDX | cefadroxil | 头孢羟肟 |
| CDX | cadmium-propylxanthate | 丙基黄原酸镉 |
| CDX | Compound index (FoxPro) | 复合索引（FoxPro） |
| CDX | Compressed drawing (Corel Draw) | 压缩图纸（Corel Draw） |
| CDX | Catellus Development Corporation | Catellus开发公司 |