| Name | Deductibility Code |
| Birthright of the Peconic Inc. | -- |
| Church of the Good Shepherd Inc. | -- |
| East End Naked Stage Theatre Company Inc. | -- |
| Eastern Long Island Police Pipes & Drums Inc. | -- |
| Educational Products Information | -- |
| Estate of Eugenie A T Smith-T Tr | 4 |
| Global Village Video Resource Center Inc. | -- |
| Hampton Bays Beautification Association Inc. | -- |
| Hampton Bays Civic Association Fund Inc. | -- |
| Hampton Bays Hibernians Inc. | -- |
| Hampton Bays Historical & Preservation Society | -- |
| Hampton Bays Public Library | -- |
| Hampton Bays Volunteer Ambulance Corps | -- |
| International Center for the Deaf | 4 |
| Literary Society Foundation Inc. | 4 |
| Margaret Hand Memorial Fund Inc. | -- |
| Michael and Carolyn Drexal Foundation | 4 |
| Momentary Theatre Inc. | -- |
| Shinnecock Canal Maritime Heritage Center | -- |
| Sobornost for the World Foundation Inc. | -- |
| The Hampton Bays Education Foundation | -- |
| Tuscany House | -- |
| Wildlife Rescue Center of the Hamptons Inc. | -- |