| Acronym | Definition |
|---|
| NWI➣Northwest Indiana |
| NWI➣National Wetlands Inventory |
| NWI➣National Water Initiative (Australia) |
| NWI➣Network Interface |
| NWI➣New Work Item |
| NWI➣National Wraparound Initiative (Seattle, WA) |
| NWI➣Newsworld International (former channel 366 on DirecTV) |
| NWI➣National Workrights Institute |
| NWI➣Native Wellness Institute |
| NWI➣Norwich, England, United Kingdom - Norwich (Airport Code) |
| NWI➣New World International (registered charity; UK) |
| NWI➣Netherlands West Indies |
| NWI➣National Women's Institute |
| NWI➣Navy Wide Internet |
| NWI➣Non-Working Interference (dentistry) |
| NWI➣New World Infrastructure Company Limited (China) |