| Abbreviation | Definition |
|---|---|
| NPC | Nickel Plated Copper |
| NPE | Northern Pipeline Extension |
| NPI | New Product Innovation |
| NPI | New Products and Ideas |
| NPI | Nutritional Products International |
| NPL | Nonbeverage Products Laboratory |
| NPMO | Nonconformities Per Million Opportunities |
| NPR | Nail Polish Remover |
| NPS | National Pipe Straight Thread |
| NPS | Net Promoter Score |
| NPTL | Natural Products Training Laboratory |
| NPTR | Net Price Received |
| NPU | Ne Plus Ultra |
| NPWT | Negative pressure wound therapy |
| NR | No Return |
| NR | Non-Returnable |
| NR | Normal Recommended retail price |
| NRB | Non-Rotating Boot |
| NRB | Not Required Back |
| NRBK | Neck Rake Builders Kit |