| LAN | Local Area Network | 局域网络 |
| LANE | Local Area Network Emulation | 局域网络仿真 |
| LAP-M | Link Access Procedure for Modems | 调制解调器连接访问协议 |
| LCD | Liquid Crystal Display | 液晶显示 |
| LD | Laser Disc | 激光碟 |
| LDAP | Lightweight Directory Access Protocol | 轻量目录访问协议 |
| LDCM | LANDesk Client Manager | 终端客户管理程序 |
| lpi | lines per inch | 线每英寸 |
| LPT | Line Print | 行式打印机（并行）端口 |