| Name | Deductibility Code |
| Ada and Gertrude Goble-Pearl Strickland Foundation | 4 |
| Calvert County Tennis Association Inc. | -- |
| Calvert Marine Society Inc. | -- |
| Community Mediation Center of Calvert County Incorporated | -- |
| International Society for Computerized Electrocardiography | -- |
| Mid Atlantic Marine Education Assn | -- |
| Ramazzini Institute for Occupational & Env Health Res Inc. | -- |
| Smile Inc. | -- |
| Solomons Volunteer Rescue Squad and Fire Department Inc. | 6 |