| Name | Deductibility Code |
| Butch Dellecave Foundation Inc. | -- |
| Childrens Choice Childcare Inc. | -- |
| Coastal and Environmental Studies Inc. | -- |
| Connetquot Aquatics Inc. | -- |
| Connetquot Foundation for the Advancement of Children | -- |
| Connetquot Public Library | -- |
| Connetquot Touchdown Club Inc. | -- |
| Danielle Whalen Memorial Foundation | 4 |
| Frank Cassata Family Foundation | 4 |
| Kids for Kids Productions Inc. C O Michele Dahir | -- |
| Lerner Foundation | 4 |
| Long Island Housing Services Inc. | -- |
| Lubavitch of the East End Inc. | -- |
| Oakdale Hostels Inc. | -- |
| Oakdale Ronkonkoma Bohemiaboosters for the Arts | -- |
| Ovations Dance Repertory Corp | -- |
| Randi and Clifford Lane Foundation | 4 |
| Spirit Animal Sanctuary Inc. | -- |
| Sro Inc. | -- |
| Suffolk Ahrc Foundation Inc. | -- |
| Suffolk Community Residential Project Inc. | -- |
| Suffolk County Association for the Help of Retarded Children Inc. | -- |
| Suffolk Hostels Inc. | -- |