OSIG
| Acronym | Definition |
|---|---|
| OSIG | Online Special Interest Group |
| OSIG | Offshore Site Investigation and Geotechnics (various locations) |
| OSIG | Online Special Interest Group (various organizations) |
| OSIG | Outdoor Special Interest Group (Japan) |
| OSIG | Oklahoma School Insurance Group |
| OSIG | Oregon State Investment Group (Oregon State University) |
| OSIG | Open Source Implementation Group |