| Abbreviation | Definition |
|---|---|
| NCASP | National Companion Animal Surveillance Program |
| NEAS | National Exotic Animal Sanctuary |
| NEKO | Japanese literal meaning for cat. |
| NGAA | North Georgia Animal Alliance |
| NGS | Normal Goat Serum |
| NIAA | National Institute for Animal Agriculture |
| NIAH | National Institute of Animal Husbandry |
| NIAW | National Institute of Animal Welfare |
| NISHA | Nantucket Island Safe Harbor for Animals |
| NLAC | National Laboratory Animal Center |
| NLAC | National Laboratory of Animal Centre |
| NLAH | North Laurel Animal Hospital |
| NMAH | Newport Mesa Animal Hospital |
| NMAH | North Mecklenburg Animal Hospital |
| NMAS | National Museum of Animals Society |
| NOAH | Northwest Organization For Animal Help |
| NPAH | North Penn Animal Hospital |
| NQAR | North Qld Animal Rescue |
| NQAR | North Queensland Animal Rescue |
| NQAR | North Queensland Animal Rescue's |