| Name | Deductibility Code |
| Accessportamerica Inc. | -- |
| Block Island Arts & Crafts Guild | -- |
| Block Island Catholic Ladies Guild Inc. | -- |
| Block Island Club Inc. | -- |
| Block Island Conservancy Inc. | -- |
| Block Island Early Learning Center | -- |
| Block Island Economic Development | 1 |
| Block Island Ecumenical Ministries Inc. | -- |
| Block Island Health Services Inc. | -- |
| Block Island Historical Society | -- |
| Block Island Housing Board | -- |
| Block Island Maritime Institute | -- |
| Block Island North Light Association | -- |
| Block Island Residents Association Inc. | -- |
| Block Island Volunteer Fire and Rescue Department | -- |
| Block Island Volunteers for Animals | -- |
| Clean Land Fund | -- |
| Friends of Island Free Library | -- |
| Macdougall Family Foundation | 4 |
| Molly Fund | -- |
| Scenic Block Island | -- |
| Southeast Lighthouse Foundation | -- |
| The Committee for the Great Salt Pond | -- |