| Name | Deductibility Code |
| Ahava Kids Inc. | -- |
| All Souls Prayer Chapel Ministries of Old Saybrook | -- |
| Bluebird Foundation Inc. | 4 |
| Breaking Barriers Foundation Inc. | -- |
| Breast Cancer Survival Center Inc. | -- |
| Bryn Mawr Alumnae Assoc of New Haven | -- |
| Connecticut Sports Foundation Inc. | -- |
| Cornfield Point Preservation Society | 4 |
| Emmanuel Baptist Church | -- |
| Estuary Council of Seniors Inc. | -- |
| For One World | -- |
| Fort Saybrook Monument Park Association Inc. | -- |
| Friends of the Acton Library | -- |
| Graduation Night Inc. | -- |
| Hope Partnership Inc. | -- |
| Irmar Foundation | 4 |
| Light Up Old Saybrook Inc. | -- |
| Lower Connecticut River Land Trust Inc. | -- |
| Marine Environmental Education Foundation Inc. | -- |
| Nochera Fam Foundation | 4 |
| Old Saybrook Ambulance Association Inc. | -- |
| Old Saybrook Babe Ruth Inc. | -- |
| Old Saybrook Education Foundation Inc. | -- |
| Old Saybrook Fire Company Number One Association Inc. | -- |
| Old Saybrook Historical Society Inc. | -- |
| Old Saybrook Land Trust Inc. | -- |
| Old Saybrook Riverside Cemetery Association Incorporated | 6 |
| Old Saybrook Rotary Foundation Inc. | -- |
| Old Saybrook Senior Housing Incorporated | -- |
| Old Saybrook Soccer Club Inc. | -- |
| Old Saybrook Youth and Family Services Foundation Inc. | -- |
| Patriot Guard Riders of Ct Inc. | -- |
| Prevailing Light Ministries Inc. | -- |
| Saybrook Colony Founders Association Inc. | -- |
| Shoreline Church Inc. | -- |
| Stand Tall Inc. A Vin Baker Charitable Organization | 4 |
| The Katharine Hepburn Cultural Arts Center Inc. | -- |
| Tidewater Institute | -- |
| Tracy Art Center Inc. | -- |
| Tree of Life Nursery School Inc. | -- |
| Womans Club of Old Saybrook | -- |
| Ypi Inc. | -- |