| Name | Deductibility Code |
| Ace in the Hole Foundation Inc. | -- |
| Barrier Beach Preservation Association Inc. | -- |
| East End Hospice Group Inc. | -- |
| East End Hospice Inc. | -- |
| Family Counseling Services | -- |
| Friends of the Westhampton Ambulance Inc. | -- |
| Hampton Jewish Cultural Center Inc. | 4 |
| Hampton Youth Athletic League Inc. | -- |
| Hamptons Interfaith Council | -- |
| Harleys Paws Park Inc. | -- |
| Henry L Obrien Foundation Inc. | 4 |
| Hugh & Betsy Lamle Foundation | 4 |
| Hurricane Educational Foundation Inc. | -- |
| Indigenous Heritage Ltd. | 4 |
| Melvin and Eunice A Miller Foundation | 4 |
| Multicultural Golf Association of America Inc. | -- |
| Robert Maurice Grunder Memorial Fund Inc. | 4 |
| Royal Productions Ltd. | -- |
| Sba Housing Initiative Corporation | -- |
| Southampton Town Police Athletic League Inc. | -- |
| Westhampton Beach Fire Department Inc. | 6 |
| Westhampton Beach Historical Society | -- |
| Westhampton Beach Nursery School | -- |
| Westhampton Beach P T O | -- |
| Westhampton Beach Performing Arts Center Inc. | -- |
| Westhampton Community Theatre Inc. | -- |
| Westhampton Cultural Consortium | -- |
| Westhampton Synagogue Inc. | -- |
| Westhampton War Memorial Ambulance Association Inc. | -- |