| Name | Deductibility Code |
| Citizens for A South Fork Ferry Inc. | -- |
| Foundation Grow Inc. | -- |
| Friends of the Shelter Island Public Library Society Inc. | -- |
| Senior Citizens Affairs Council of the Town of Shelter Island Ny Inc. | -- |
| Shelter Island Clean Air Coalition Inc. | -- |
| Shelter Island Community Center Foundation | -- |
| Shelter Island Community Chorus Inc. | -- |
| Shelter Island Educational Foundation Inc. | -- |
| Shelter Island Friends of Music Inc. | -- |
| Shelter Island Public Library | -- |
| Shelter Island Run Inc. | -- |
| Sholom Aleichem Network Inc. | -- |
| Ten Kilometer Run Community Fund Inc. | -- |
| Webster W Schott Foundation Inc. | 4 |