| Acronym | Definition |
|---|
| OSSD➣Ontario Secondary School Diploma |
| OSSD➣Oss Default |
| OSSD➣Organization for the Study of Sex Differences (Washington, DC) |
| OSSD➣Open Source Sports Directory (resource) |
| OSSD➣Opportunistic Software Systems Development (various organizations) |
| OSSD➣Open Software Service Definition (FOSS) |
| OSSD➣Office of Space Systems Development (NASA) |
| OSSD➣Digor (linguistics) |
| OSSD➣Operations Support Services Division (San Jose Police Department; California) |
| OSSD➣Output Signal Switch Device |
| OSSD➣Optical and Space Systems Division |