OIGA
| Acronym | Definition |
|---|---|
| OIGA | Oklahoma Indian Gaming Association (Concho, Oklahoma) |
| OIGA | Oregon Insurance Guaranty Association |
| OIGA | Ohio Insurance Guaranty Association |
| OIGA | Other Income Generating Activity |
| OIGA | occipito-iliaque gauche antérieure |
| OIGA | Office of Intergovernmental Affairs |