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: I
| Type | High | Full Name |
| IAM | 0093 | McDaniel College |
| IBT | 1509 | Teamsters Joint Council No. 62 |
| IBT | Teamsters Joint Council No. 62 motorcycle | |
| ID | Indian Head Volunteer Fire Department and Rescue Squad, Inc. | |
| IEC | 0091 | International Union of Elevator Constructors Local 10 |
| IF | 1777 | Prince George's County Professional Firefighters Association |
| IF | Prince George's County Professional Firefighters Association (motorcycle) | |
| IH | Independent Hose Company No.1 | |
| IM | 0037 | St. Mary's Parish and Schools Annapolis |
| IND | 0156 | Institute of Notre Dame |
| IS | 0157 | Millers Island Lighthouse |
| IT | 0030 | IH Collectors Club |
| IUP | Maryland Transportation Authority Police Association | |
| IV | National 4th Infantry Division Association | |
| IVY | 0020 | Alpha Kappa Alpha XDO |
| IWL | 0028 | Izaak Walton League |
| IWR | Iron Workers Union Local #5 |
