| Name | Deductibility Code |
| Chamber Theatre of Maine | -- |
| Conservatory of American Letters | -- |
| Friends of the Thomaston Public Library | -- |
| Georges River Educational Foundation | -- |
| Georges River Tidewater Assoc | -- |
| Mid Coast Depression and Bipolar Support Alliance | -- |
| Owls Head South Thomaston and Thomaston Solid Waste Corporation | -- |
| Penobscot Bay Ministries | -- |
| Power Ten New York Inc. | -- |
| The General Henry Knox Museum | -- |
| Thomaston Historical Society | -- |