| Name | Deductibility Code |
| Ancient Order Land Corp | -- |
| Bobbys Forever in Our Hearts Corp | -- |
| Broadhollow Players Ltd. | -- |
| Calvary Chapel of Hope | -- |
| Canine Animal Rescue Effort of America Inc. | -- |
| Dc Competition Company Fundraising Team Dcct | -- |
| East Islip Competition Cheerleaders Corp | -- |
| East Islip Little League Football | -- |
| East Islip Soccer Club | -- |
| East Islip Student Athletes Booster Club Inc. | 4 |
| Ej Autism Foundation | -- |
| Exchange Ambulance Corporation of the Islips | -- |
| For the Kids Foundation of East Islip Inc. | -- |
| Islip Arts Council Inc. | -- |
| Long Island Express Fastpitch Softball Inc. | -- |
| M O S T Inc. | -- |
| Sanctuary East Ltd. | -- |
| The Haugland Family Foundation Inc. | 4 |
| Thomas Hartman Foundation for Partinsons Research Inc. | -- |