| Name | Deductibility Code |
| A&C International Foundation Inc. | -- |
| Association for the Advancement of Baltic Studies Inc. | -- |
| Camp Calleva | -- |
| Circle Inc. | -- |
| Foundation for Ocean Renewables Limited | -- |
| John Brown Historical Foundation Inc. | -- |
| Marvin & Sylvia Rubin Private Family Foundation Inc. | 4 |
| Maryland Madness Inc. | -- |
| Montessori Country School of Md Inc. | -- |
| Society for Marine Mamalogy | -- |
| The Frederick S Balsam Sr Charitable Trust | 4 |
| The Indian Association of Frederick | -- |
| Thomas Jefferson Preparatory Corp | -- |