| Rank | Abbreviation | Meaning |
|---|
| ***** | NAPI | Nursing Assessment of Pain Intensity
| |
| *** | NAPI | Neurobehavioral Assessment for Preterm Infants
| |
| * | NAPI | Net Antecedent Precipitation Index
| |
| * | NAPI | Naval Aeronautical Publications Index
| |
| * | NAPI | National Association of Private Investigators
| |
| * | NAPI | Naval Aeronautic Publications Index
| |
| * | NAPI | Native American Political Issues
| |
| * | NAPI | National Asphalt Products, Inc.
| |
| * | NAPI | Network Application Program Interface
| |
| * | NAPI | Navajo Agricultural Products Industry
| |
| * | NAPI | National Arson Prevention Initiative
| |
| * | NAPI | North Alabama Planetarium Initiative
| |
| * | NAPI | National Association of Professional Investigators
| |
| * | NAPI | National Amusement Park Index
| |
| * | NAPI | Nebraska Assoc of Private Investigators
| |
| * | NAPI | National Association of Property Inspectors
| |
| * | NAPI | North American PCTE Initiative
| |
| * | NAPI | Navajo Agricultural Products Inc
| |
| * | NAPI | Numbering/Addressing Plan Identifier
| |
| * | NAPI | Navajo Agriculture Products Industry
| |
| * | NAPI | Nebraska Association of Private Investigators
| |
| * | NAPI | Numbering and Addressing Plan Indicator
| |
| * | NAPI | Northern Alliance of Paranormal Investigators
| |
| * | NAPI | North American Paragliding Inc
| |
| * | NAPI | National Aviation Products Inc
| |