| Name | Deductibility Code |
| Alumnae Association of St. Timothys School and Hannah More Academy Inc. | -- |
| Carroll Museums Inc. | -- |
| Corporation of St. Timothys School | -- |
| Elayne and Buzz Berg Foundation Inc. | 4 |
| Friends of Tourette Syndrome Research Inc. | -- |
| Maryland Portrait Foundation Incorporated | -- |
| Michael Feinglass Foundation Inc. | 4 |
| Nathan M Carter Foundation Inc. | -- |
| Odyssey School Inc. | -- |
| Shoshana S Cardin Family Foundation Inc. | 4 |
| Sigmund M Hyman Foundation Inc. | 4 |
| Stevenson University Inc. | -- |
| The Toby and Melvin Foundation Inc. | 4 |
| White Trivas Family Foundation Inc. | 4 |
| Woodvale Fund Inc. | -- |