INWR
| Acronym | Definition |
|---|---|
| INWR | Iroquois National Wildlife Refuge (US FWS; New York) |
| INWR | International Network for Whaling Research (est. 1990; University of Alberta; Edmunton, Alberta, Canada) |
| INWR | Imperial National Wildlife Refuge (Yuma County, AZ) |
| INWR | Irish North Western Railway (est. 1862) |
| INWR | Inland Northwest Rescue |
| INWR | Izembek National Wildlife Refuge (US FWS; Alaska) |