| Name | Deductibility Code |
| Council Ib Renal Nutrition of Long Island | -- |
| Dayton Soehlke Ohlhorst Veterans Memorial Inc. | 6 |
| Kenneth J Tedaldi Foundation Inc. | 4 |
| Mission of Kindness | -- |
| Peconic Baykeeper Inc. | -- |
| Picheny Charitable Tr | 4 |
| Quogue Association Inc. | -- |
| Quogue Fire Department | 6 |
| Quogue Free Library Li Brary Inc. | -- |
| Quogue Historical Society | -- |
| Quogue Junior Theater Troupe Inc. | -- |
| Southampton Township Wild Fowl Association Inc. | -- |
| Stan Wong Foundation | -- |
| Surf Club of Quogue Scholarship Fund | -- |
| The Serio Foundation | 4 |