| Acronym | Definition |
|---|
| NEP | National Estuary Program (US EPA) |
| NEP | New Economic Policy |
| NEP | National Emphasis Program |
| NEP | New England Patriots |
| NEP | National Expenditure Program (Philippines) |
| NEP | Network Equipment Providers |
| NEP | Node Error Program |
| NEP | National Environment Programme (UK) |
| NEP | Noise Equivalent Power |
| NEP | Net Ecosystem Productivity |
| NEP | Needle Exchange Program |
| NEP | Net Earned Premium (insurance accounting) |
| NEP | China North East Petroleum |
| NEP | National Education Plan |
| NEP | Non English Proficient |
| NEP | National Exercise Program |
| NEP | Nuclear Electric Propulsion |
| NEP | North Ecliptic Pole |
| NEP | New Ecological Paradigm |
| NEP | Network Equipment Provider |
| NEP | North East Province (various locations) |
| NEP | New Economic Papers |
| NEP | Nuclear Export Protein |
| NEP | New Economic Program |
| NEP | Niagara Escarpment Plan |
| NEP | Network Entry Point |
| NEP | Nutrition Enhancement Program (various organizations) |
| NEP | New Era Publications |
| NEP | Nonessential Experimental Population (wildlife) |
| NEP | Negotiated Education Plan (Australia) |
| NEP | Never Ending Program |
| NEP | Network Educational Press (UK) |
| NEP | New England Peptide, LLC |
| NEP | North East Patches (England NHS organizations utilizing a shared Oracle financials eBusiness system) |
| NEP | Never Ending Policy |
| NEP | New England Philharmonic |
| NEP | Northeast Portland |
| NEP | Nash Equilibrium Point |
| NEP | Nursing Education Program |
| NEP | Non-Equity Partner (business relationship) |
| NEP | Nonsymmetric Eigenvalue Problem (mathematics) |
| NEP | N-Ethyl-2-Pyrrolidone |
| NEP | Network Element Processor |
| NEP | Nonsymmetric Eigenproblem |
| NEP | Nowaja Ekonomitscheskaja Politika (Russian: new economic policy; in the 1920s) |
| NEP | National Environmental Plan |
| NEP | Navy Enterprise Portal |
| NEP | New England Press |
| NEP | Nominal Entry Point |
| NEP | Neurobiologie Et Psychiatrie |
| NEP | NDI Evaluation Report |
| NEP | Nuclear Event Protection |
| NEP | New England Pottery Co. (Boston, MA) |
| NEP | Nice Euchre, Partner (online gaming chat) |
| NEP | National ELINT Plan |
| NEP | Native Execution Preprocessor |
| NEP | Net Effective Price |
| NEP | Nationwide Express Parcels (UK) |
| NEP | Non-Equal Partition |