| Abbreviation | Definition |
|---|---|
| NOW | Newcomer Orientation Week |
| NSIS | North Shore Immigration Service |
| NSIS | North Shore Immigration Services |
| OBIS | Ohio Business for Immigration Solutions |
| OBTP | Ontario Bridge Training Program |
| ODIS | Open Door Immigration Services |
| OFIR | Oregonians for Immigration Reform |
| OIL | Office Of Immigration Litigation |
| OINP | Ontario Immigrant Nominee Program |
| OINPESI | Ontario Immigrant Nominee Program – Entrepreneur Success Initiative |
| OIRA | Office of Immigrant and Refugee Affairs |
| OISC | Office of the Immigration Services Commissioner |
| OMNIA | Odysseus Monnet Network for Immigration and Asylum |
| ORIS | Organization for Refugee and Immigrant Success |
| OSLT | Occupation-Specific Language Training |
| OTIS | Online Tracking Information System |
| OVD | Optically Variable Device |
| OVI | Optically Variable Ink |
| OVIS | Office of Visa and Immigration Services |
| PAIC | Paul Abraham Immigration Consulting |