| Acronym | Definition |
|---|
| NDI➣National Democratic Institute |
| NDI➣National Dance Institute (New York) |
| NDI➣Non-Destructive Inspection (such as x-ray of wings for cracks) |
| NDI➣Northern Digital, Inc. (Waterloo, Ontario, Canada) |
| NDI➣Nephrogenic Diabetes Insipidus |
| NDI➣Network Design and Installation |
| NDI➣Network Driver Installer |
| NDI➣Network Driver Interface |
| NDI➣Non Developmental Item |
| NDI➣Non-Developmental Item |
| NDI➣National Death Index |
| NDI➣Neck Disability Index (physical therapy) |
| NDI➣New Dietary Ingredient (FDA) |
| NDI➣Nissan Design International |
| NDI➣Northern Development Initiative (Canada) |
| NDI➣National Dialogue Initiative (various organizations) |
| NDI➣Nautical Data International |
| NDI➣Neurodevelopmental Impairments |
| NDI➣Non-Industrial Disability Insurance |
| NDI➣Nissay Dowa Insurance (Japan) |
| NDI➣No Deception Indicated (polygraph) |
| NDI➣National Deliverability Index |
| NDI➣Nitrogen Drawdown Index (Australian standard for composts, soil conditioners) |
| NDI➣New Data Indicator |
| NDI➣Network Deployment and Integration |
| NDI➣Numéro de Désignation d'Installation (French) |
| NDI➣National Decertification Index (International Association of Directors of Law Enforcement Standards and Training) |
| NDI➣Navigation Data Integrator (US Navy) |
| NDI➣Nongard Depression Index (self-assessment tool) |
| NDI➣Nielsen Drug Index |
| NDI➣Normalized Dispersion Index |