| OSSD | Digor (linguistics) | Digor（语言学） |
| OSSD | Open Source Software Development | 开源软件开发 |
| OSSD | Optical and Space Systems Division | 光学和空间系统司 |
| OSSD | Organization for the Study of Sex Differences (Washington, DC) | 性别差异研究组织（华盛顿特区） |
| OSSD | Ontario Secondary School Diploma | 安大略省中学文凭 |
| OSSD | Output Signal Switch Device | 输出信号开关装置 |
| OSSD | Office of Space Systems Development (NASA) | 空间系统开发办公室（NASA） |