| Name | Deductibility Code |
| Cape Cod Law Enforcement Council Inc. | -- |
| Charles J & Nancy G Brown Historic Military Figures Tr | 4 |
| Dennis Development Corporation | -- |
| Dennis Historical Society | -- |
| Dennis Police Association Inc. | -- |
| Elder Services of Cape Cod | -- |
| Elf-N-Wood Stables Inc. | -- |
| Friends of Dennis Senior Citizens Inc. | -- |
| Friends of the Dennis Public Library Inc. | -- |
| Good Hope Adoption Services Inc. | -- |
| Hcv Support Inc. | -- |
| Henry Beston Society Inc. | -- |
| Jam Specialists Inc. | -- |
| Liberty Hall | -- |
| Lighthouse Figure Skating Club | -- |
| Massachusetts Shellfish Officers Association Inc. | -- |
| Mid Cape Ice Arena Inc. | -- |
| Old South Dennis Village Association Inc. | -- |
| Radkids Inc. | -- |
| Scargo School Inc. | -- |
| South Dennis Free Public Library Association Inc. | -- |