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: Z
| Type | High | Full Name |
| ZAG | Gonzaga College High School | |
| ZGL | M.W. Zerubbabel Grand Lodge | |
| ZOO | 0044 | Friends of the Salisbury Zoo |
| ZPB | Zeta Phi Beta Sorority, Inc. | |
| ZX | 0029 | Frederick Saltwater Anglers |
