| Abbreviation | Definition |
|---|---|
| MRF | Materials Recovery Facility (or Recycling or Factory) |
| MRWA | Merseyside Recycling and Waste Authority formerly known as Merseyside Waste Disposal Authority |
| MSDS | Material Safety Data Sheet |
| MSWI | Municipal Solid Waste Incineration |
| MVDA | Motor Vehicle Dismantlers Association |
| MWDA | Merseyside Waste Disposal Authority as of December 2011 renamed as Merseyside Recycling and Waste Authority |
| MWLP | Minerals and Waste Local Plan |
| NAWDO | National Association of Waste Disposal Officers |
| NCAS | National Compliance Assessment Service |
| NCH | National Clearing House |
| NELVS | Natural End of Life Vehicles |
| NFFO | Non-Fossil Fuel Obligation |
| NGG | New Generation Group (CIWM programme renamed New Member Network) |
| NHHWF | National Household Hazardous Waste Forum |
| NIMBY | Not In My Back-Yard |
| NISP | National Industrial Symbiosis Programme |
| NLWA | North London Waste Authority |
| NPWD | National Packaging Waste Database |
| NRC | Nuclear Regulatory Commission (US) |
| NSIP | Nationally Significant Infrastructure Project |