| Abbreviation | Definition |
|---|---|
| NWPD | North Wildwood Police Department |
| NYC | Not Your Crib |
| NYD/P | New York Department/ Police |
| NYDP | New York Dance Police |
| NYFVO | North Yorkshire Forum for Voluntary Organisations |
| NYGD | New York Guard Department |
| NYP | New York Police |
| NYP | North Yorkshire Police |
| NYPA | North Yorkshire Police Authority |
| NYPAA | North Yorkshire Police Athletic Association |
| NYPD | New York Police Department's |
| NYPD | New York Police District |
| NYPD | North Yorkshire Police Department |
| NYPD | Not Your Police Department |
| NYSACP | New York State Association of Chiefs of Police |
| NZPF | New Zealand Police Force |
| NZPP | National Zoological Park Police |
| O/THAN | Other Than |
| OACP | Ohio Association of Chiefs of Police |
| OACP | Oklahoma Association of Chiefs of Police |