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: P
| Type | High | Full Name |
| PA | 0063 | Shippensburg University General Alumni Association |
| PAX | Patuxent Riverkeeper | |
| PAZ | Maryland Peace Action Education Fund | |
| PB | 0114 | Parsonsburg Volunteer Fire Company |
| PBS | 0095 | Phi Beta Sigma Fraternity, Inc. |
| PC | 0880 | Porsche Club of America - Chesapeake Region |
| PCC | Poe's Crow Club, Inc. | |
| PCM | Praise Chapel Ministries | |
| PD | 0439 | Police Dispatchers, Inc. |
| PE | 0212 | Police Emerald Society of the Washington DC Area |
| PEO | Maryland Society of Professional Engineers | |
| PEOS | 059 | Maryland State Chapter PEO Sisterhood |
| PES | 0243 | Police Emerald Society - Baltimore Maryland |
| PET | 3406 | Spay & Neuter |
| PF | 5386 | International Association of Fire Fighters |
| PF | International Association of Fire Fighters (motorcycle) | |
| PFD | Pittsville Volunteer Fire Dept. | |
| PFF | 0332 | International Association of Firefighters F-260 |
| PFV | Prince Frederick Volunteer Fire Department | |
| PGB | Pleasant Grove Baptist Church | |
| PGF | 0022 | P.G. Firefighters, IAFF |
| PGT | Printing Industries of Maryland Education Fund | |
| PH | 06137 | Combat Wounded |
| PH | Combat Wounded (motorcycle) | |
| PHA | Patterson High School Alumni Association, Inc. | |
| PHC | 0068 | Ocean City Parrothead Club |
| PHS | 0195 | U.S. Public Health Service |
| PHS | Pearl Harbor Survivors Association, Inc. | |
| PIR | 0002 | 101st Airborne Division |
| PM | Calvert Advance Life Support | |
| PMF | 0027 | Phi Mu Fraternity |
| PN | 0050 | Ocean Pines, Md. |
| POB | Pride of Baltimore, Inc. | |
| PORT | 425 | Private Sector Port Coalition |
| POW | 194 | Department of Maryland American Ex - Prisoners of War, Inc. |
| PR | Patapsco River Power Squadron | |
| PS | 2313 | Penn State Alumni Association (older design) |
| PS | 2783 | Penn State Alumni Association (current design) |
| PSB | 0187 | Presidental Service |
| PSY | 0024 | Maryland Psychological Association, Inc. |
| PT | 0143 | Piscataway Conoy Confederacy and Sub Tribes, Inc. |
| PT | Port Towns Community Development Corporation | |
| PTA | 0038 | Maryland PTA |
| PU | 0071 | Princeton Alumni Association of Maryland |
| PUG | 0095 | Mid Atlantic Pug Rescue |
| PUR | 0033 | Purdue University |
| PV | Pocomoke City Volunteer Fire Company, Inc. | |
| PVD | 0012 | Potomac Valley Dressage Association |
| PZ | 0009 | German Law Enforcement |
