| Abbreviation | Definition |
|---|---|
| NESSA | North East Shiloh Shepherd Association |
| NESTA | National Earth Science Teachers Association |
| NESTA | Native English Speaking Teachers Association |
| NETA | National Exercise Trainers Association |
| NETA | New England Translators Association |
| NETDA | New England Training Directors Association |
| NEWRA | North End Waterfront Residents Association |
| NFABK | National Franchisee Association of Burger King |
| NFAO | New Foundland Association of Optometrists |
| NFFS | Non-Ferrous Founders' Society |
| NFIA | National Film Industry Association |
| NFIB | National Federation of Independent Business |
| NFIB | National Federation of Independent Businesses |
| NFPA | National Flight Paramedics Association |
| NFPA | National Fluid Power Association |
| NFPA | National Food Processors Association |
| NFPA | National Forest Products Association |
| NFPA | National Foster Parent Association |
| NFSG | National Financial Services Group |
| NFTC | National Foreign Trade Council |