| Abbreviation | Definition |
|---|---|
| NIR | National Insurance Repository |
| NIRA | National Insurance Recruiters Association |
| NIS | National Insurance Scheme |
| NIW | New Insurance Written |
| NJI | New Jubilee Insurance |
| NKMI | North Kent Mutual Insurance |
| NLAIC | National Life and Accident Insurance Company |
| NMI | National Mortgage Insurance |
| NNIB | Near North Insurance Brokerage |
| NOAH | Nationwide Operational Assessment of Hazards |
| NOAI | Non Occupational Accident Insurance |
| NOC | Notice Of Cancellation |
| NOC | Notice Of Coverage |
| NP | Named Perils |
| NPIC | North Pointe Insurance Co |
| NPIC | North Pointe Insurance Company |
| NPIS | Non Profit Insurance Services |
| NTIS | National Transportation Insurance Solutions |
| NUI | Norwich Union Insurance |
| NULIS | Norwich Union Life Insurance Society |