| Name | Deductibility Code |
| Birthright of Southern Maryland Inc. | -- |
| Cancer Support Group of Southern Maryland Inc. | -- |
| Colors of Love Corporation | -- |
| Community Mediation Center of Southern Maryland Inc. | -- |
| Community Television in St. Marys Inc. | -- |
| Discover U Childrens Museum Inc. | -- |
| Friends of Cedar Lane Inc. | -- |
| Guardian Angels | -- |
| Health Share of St. Marys | -- |
| Hospice of St. Marys Inc. | -- |
| Kirsten N Russell Memorial Scholarship Fund | 4 |
| Leadership Southern Maryland | -- |
| Leonard Hall Jr Naval Academy Inc. | -- |
| Leonardtown High School Athletic Boosters Club Inc. | -- |
| Leonardtown Lions Club Cheritable Foundation | -- |
| Leonardtown Volunteer Fire Department Inc. | -- |
| Leonardtown Volunteer Rescue Squade Inc. | -- |
| Life Expressions Inc. | -- |
| Local Management Board of St. Marys | -- |
| Loveville Christian Fellowship | -- |
| Mental Health Authority of St. Marys | -- |
| On Our Own of St. Marys Inc. | -- |
| Open Door Bible Church of St. Marys County Inc. | -- |
| Patuxent Tidewater Land Tr | -- |
| Saint Marys County Fair Association Incorporated | -- |
| Second Hope Rescue Inc. | -- |
| Shekinah Temple of Jesus Christ Inc. | -- |
| Shop With A Cop | -- |
| Southern Maryland Rugby Football Association | -- |
| Southern Maryland Storm Baseball | -- |
| St. Johns United Episcopal Church | -- |
| St. Mary S Nursing Center Inc. | -- |
| St. Marys Animal Welfare League Inc. | -- |
| St. Marys Council No 1470 Knights of Columbus Charities Inc. | -- |
| St. Marys County Genealogical Society Inc. | -- |
| St. Marys County Historical Society Inc. | -- |
| St. Marys County Memorials Association | -- |
| St. Marys County Public School Building Trades Foundation Inc. | -- |
| St. Marys County Public Schools Science Technology Engineering & M | -- |
| St. Marys Helping Hands Inc. | -- |
| St. Marys Home for the Elderly III Inc. | -- |
| St. Marys Home for the Elderly Inc. | -- |
| St. Marys Hospital Auxiliary | -- |
| St. Marys Hospital Foundation Inc. | -- |
| St. Marys Hospital of St. Marys County | -- |
| St. Marys Nursing Center Foundation Inc. | -- |
| St. Marys Sunshine Center Inc. | -- |
| The St. Marys County Arts Council Inc. | -- |
| Tomorrows Child Inc. | -- |
| Voices for Quality Care-Ltc | -- |
| Walden Sierra Corporation | -- |