| Abbreviation | Definition |
|---|---|
| NGFD | North Greece Fire Department |
| NGFD | North Greenbush Fire District |
| NGFD | North Greenville Fire Department |
| NKFD | North Kingstown Fire Department |
| NPSH | National Pipe Straight Hose Thread (Canadian fire hoses) (cf. NST in US) |
| NSFD | North Shelby Fire District |
| NSFD | North Shore Fire Department |
| NST | National Standard Thread (US fire hoses) (cf. NPSH in Canada) |
| NTFD | North Thompsonsville Fire Department |
| NTFD | North Thompsonville Fire Department |
| NTFD | North Tiverton Fire District |
| NTFD | North Tonawanda Fire Department |
| NTFD | North Tongass Fire Department |
| NTFD | North Tooele Fire District |
| NWFD | New Windsor Fire Department |
| NWFD | North Wilkesboro Fire Department |
| NYFD | Navy Yard Fire Department |
| NYFD | New York Fire Department |
| NYFRS | North Yorkshire Fire Rescue Service |
| OAFC | Ontario Association of Fire Chiefs |