| Abbreviation | Definition |
|---|---|
| NCCI | National Counsel Of Compensation Insurance |
| NCIC | National Convention of Insurance Commissioners |
| NCIP | Natural Catastrophe Insurance Program |
| NCOIL | National Council Of Insurance Legislators |
| NDID | North Dakota Insurance Department |
| NDIS | National Disability Insurance Scheme |
| NEH | New England Heritage (insurance; Massachusetts) |
| NEIB | New England Insurance Brokers |
| NEIL | Nuclear Electric Insurance Limited |
| NFIP | National Flood Insurance Program |
| NFU | National Farmers Union mutual |
| NGI | Next Generation Insurance |
| NGIB | Nedbank Group Insurance Brokers |
| NHIA | National Health Insurance Authority |
| NHIF | National Health Insurance Fund |
| NHIF | National Hospital Insurance Fund |
| NHIP | National Hangar Insurance Program |
| NHIP | National Health Insurance Program |
| NHIS | National Health Insurance Scheme |
| NIAC | Nonprofits Insurance Alliance of California |