MDplates.com
MDplates is a joint venture between Jordan Irazabal of Delaware, and Scott Zillmer of Maryland. The goal is to find and photograph every special organization plate that Maryland offers.
Letter: N
| Type | High | Full Name |
| NA | 1196 | US Naval Academy Alumni Association |
| NAT | 0433 | Washington Nationals |
| NAVY | 017 | Naval Reserve Association |
| NAZ | Washington District Church of the Nazarene | |
| NC | Navy Cross | |
| NCC | 0096 | North Carolina Central University |
| NCS | NC State Alumni | |
| ND | 444 | Notre Dame Club of Maryland |
| NDF | Neck District Volunteer Co. | |
| NDM | 0474 | National Defense Service Medal |
| NDM | 0023 | National Defense Service Medal (motorcycle) |
| NDMU | 056 | Notre Dame of Maryland University |
| NDN | Monacan Indian Nation | |
| NDP | Notre Dame Preparatory | |
| NEA | Maryland State Teachers Association | |
| NET | 0048 | Montgomery County Tennis Association |
| NF | 0038 | Newark Volunteer Fire Department |
| NFF | 0001 | National Fallen Firefighters Association |
| NG | 3017 | Maryland National Guard |
| NHL | 1799 | Washington Capitals Charities |
| NIH | 0227 | National Institutes of Health |
| NK | Free State Nam Knight Motorcycle Club of America | |
| NK | Free State Nam Knight Motorcycle Club of America (motorcycle) | |
| NM | New Market District Volunteer Fire Rescue Company, Inc. | |
| NN | 0013 | Nar Narayan Dev |
| NOW | National Organization for Women | |
| NP | Natural Resources Police Reserve Officer Association | |
| NPE | North Point-Edgemere Volunteer Fire Dept. | |
| NR | 0563 | National Rifle Association |
| NRP | 0159 | Natural Resource Police Alumni |
| NS | New Shiloh Baptist Church | |
| NS | 033 | North - South Skirmish Association, Inc. |
| NSP | 0006 | National Ski Patrol |
| NSS | National Speleological Society | |
| NSU | 0037 | Norfolk State University |
| NU | 0020 | Northwestern University Alumni |
| NV | Newburg Volunteer Rescue Squad, Inc. |
