| DLB | Don't Look Back | 别回头看 |
| DLB | Dynamic Load Balancing | 动态负载平衡 |
| DLB | Direct Laryngoscopy and Bronchoscopy | 直接喉镜和支气管镜检查 |
| DLB | Dual Live Buffer | 双实时缓冲区 |
| DLB | Digital Lecture Board (University of Mannheim, Germany) | 数字演讲板（德国曼海姆大学） |
| DLB | Data Loopback | 数据环回 |
| DLB | Direct Laryngobronchoscopy | 直接喉镜检查 |
| DLB | Dictionary of Literary Biography | 文学传记辞典 |
| DLB | Dead-Letter Box (espionage tradecraft; aka dead drop) | 死信盒（间谍交易；又名死信盒） |
| DLB | Downline Builder (multi-level marketing) | Downline Builder（多层次营销） |
| DLB | Dementia with Lewy Bodies | 失智症 |
| DLB | Defect Liability Bond | 缺陷责任保函 |
| DLB | Directline for Business | 商务直销 |
| DLB | Dual Leaky Bucket | 双泄漏铲斗 |
| DLB | Digital Loopback | 数字环回 |