| Name | Deductibility Code |
| 4 Paws Inc. | -- |
| American Lyme Disease Foundation Inc. | -- |
| Angel Charitable Tr | -- |
| Bala Music & Dance Association Ltd. | 4 |
| Camp Claire Inc. | -- |
| Camps Newfound Owatonna Corporation | -- |
| Center for International Management Education Inc. | -- |
| Center School Pto | -- |
| Connecticut River Basketball Club Inc. | -- |
| Connecticut River Lacrosse Club Inc. | -- |
| Crosby Fund for Haitian Education Inc. | -- |
| Fourth Row Theatre Company Inc. | -- |
| Gotham Learning Inc. | -- |
| High Hopes Therapeutic Riding Inc. | -- |
| Human Being Foundation Inc. | -- |
| Hunter Grubb Foundation Inc. | 4 |
| Kenyon Family Foundation | 4 |
| Learn | -- |
| Learn Project Inc. | -- |
| Lyme Academy of Fine Arts Inc. | -- |
| Lyme Art Assoc Inc. | -- |
| Lyme Historical Society | -- |
| Lyme Old Lyme Boosters Club Inc. | -- |
| Lyme Old Lyme Middles School Pto | -- |
| Lyme-Old Lyme Basketball Club | -- |
| Lyme-Old Lyme Education Foundation | -- |
| Lyme-Old Lyme Lions Charities Inc. | -- |
| Lyme-Old Lyme Safe Graduation Party Inc. | -- |
| Lyme-Old Lyme Soccer Club Inc. | -- |
| Lymes Youth Service Bureau Inc. | -- |
| Maina Foundation | -- |
| Malta Inc. | -- |
| Mile Creek Parent Teacher Organization of Old Lyme Connectic | -- |
| Musical Masterworks Inc. C/O Jem | -- |
| Nancy A Larson Foundation Inc. | 4 |
| Ocean Exploration Trust Inc. | -- |
| Old Lyme Affordable Housing Corporation | -- |
| Old Lyme Cemetery Association Inc. | 6 |
| Old Lyme Childrens Learning Center Inc. | -- |
| Old Lyme Conservation Trust Inc. | -- |
| Old Lyme Fire Deaprtment Inc. | -- |
| Old Lyme Historical Society Inc. | -- |
| Old Lyme South End Volunteer Ambulance Associatin Inc. | -- |
| Old Lyme Town Band | -- |
| Old Lyme-Phoebe Griffin Noyes Library Assn | -- |
| Panoram Foundation Inc. | 4 |
| Pet Connections Inc. | -- |
| Potapaug Audubon Society | -- |
| Ruth Ann Heller Music Foundation Inc. | 4 |
| Sound View Beach Association Inc. | -- |
| Southeastern Connecticut Center for Juvenile Justice Inc. | -- |
| Southwick Foundation Inc. | 4 |
| The Katherine Forest Crafts Foundation Inc. | 4 |
| The Womans Exchange of Old Lyme Inc. | -- |
| Tree of Life Educational Fund Inc. | -- |
| Tributary Mill Conservancy | -- |
| Visiting Nurse Association Inc. Old Lyme | -- |