| LOSA | Lakshmi Old Students Association (India) | 拉克希米老年学生协会（印度） |
| LOSA | Lake Ontario Steelhead Association | 安大略湖钢铁协会 |
| LOSA | Line Operations Safety Audit | 生产线运营安全审计 |
| LOSA | Line of Sight Attenuation | 视线衰减 |
| LOSA | Level of Service Agreement | 服务水平协议 |
| LOSA | List Of Stamp Applications | 邮票申请表 |