| Name | Deductibility Code |
| Anglicantv Ministries Inc. | -- |
| Animal Rescue Foundation Inc. | -- |
| Education Enrichment Fund of Thomaston Inc. | -- |
| Fine Arts Connection of Thomaston Inc. | -- |
| Friends of Delphi Incorporated | 4 |
| Friends of the Thomaston Public Library Inc. | -- |
| Railroad Museum of New England Inc. | -- |
| Thomaston Historical Society Inc. | -- |
| Thomaston Opera House Commission | -- |
| Thomaston Volunteer Ambulance Corps Inc. | -- |
| Thomastonvolunteer Fire Department Incorporated | -- |
| Thomston Savings Bank Foundation Inc. | 4 |
| Visiting Nurse Association of the Town of Thomaston Inc. | -- |