| Name | Deductibility Code |
| Association of the Friends of the Alice L Pendleton Library | -- |
| Beacon Project | -- |
| Big Tree Boating Association | -- |
| Friends of the Islesboro Fire Department | -- |
| Island Feral Cat Association | -- |
| Isleboro Pre School | -- |
| Islesboro Affordable Property | -- |
| Islesboro Community Center | -- |
| Islesboro Community Fund | -- |
| Islesboro Historical Society | -- |
| Islesboro Islands Trust | -- |
| Pendleton Cemetery Inc. | 6 |
| Penobscot Bay Alliance | -- |
| Society for the Preservation of the Free Will Baptist Church of | -- |