| Name | Deductibility Code |
| Community Church of Moodus | -- |
| Darul Uloom Shady Brook Inc. | -- |
| East Haddam Ambulance Association Inc. | -- |
| East Haddam Free Public Library | -- |
| East Haddam Pto | -- |
| East Haddam Youth and Family Services Inc. | -- |
| Kurt Kaufmann Foundation | 4 |
| Middle School Principals Advisory Council | -- |
| Middlesex County Camp Foundation Inc. | -- |
| My Fathers House of Moodus Inc. | -- |
| Sacred Heart Retreat Center Inc. | -- |
| Senior Housing Corporation of East Haddam Inc. the | -- |
| The Torah Institute Inc. | -- |
| White Buffalo Inc. | -- |