| Acronym | Definition |
|---|
| NAPI | Navigation Api |
| NAPI | Native Api |
| NAPI | Navajo Agricultural Products Industry |
| NAPI | Native American Political Issues |
| NAPI | National Association of Property Inspectors |
| NAPI | Nursing Assessment of Pain Intensity |
| NAPI | National Arson Prevention Initiative |
| NAPI | Neurobehavioral Assessment of the Preterm Infant |
| NAPI | National Asphalt Products, Inc. (Michigan) |
| NAPI | North Alabama Planetarium Initiative |
| NAPI | Nebraska Association of Private Investigators |
| NAPI | Naval Aeronautic Publications Index |
| NAPI | North American PCTE Initiative |
| NAPI | North American Power Insight |
| NAPI | Network Application Programming Interface |
| NAPI | Northern Alliance of Paranormal Investigators |
| NAPI | Net Antecedent Precipitation Index (drainage modeling) |
| NAPI | National Association of Professional Investigators (California) |