| Name | Deductibility Code |
| Agape Project Inc. | -- |
| Barnaba Institute Inc. | -- |
| Birthright of Greater Westbrook Inc. | -- |
| Chaney Family Foundation Inc. | 4 |
| Clinton Art Society | -- |
| Clinton Cemetery Association Inc. | 6 |
| Clinton Child Care Service Inc. | -- |
| Clinton Education Foundation Inc. | -- |
| Clinton Historical Society Inc. | -- |
| Clinton Land Conservation Trust Inc. | -- |
| Clinton Marine Association Inc. | -- |
| Cornerstone Community Church | -- |
| Country Nursery School of Clinton Incorporated | -- |
| Dances With Wood Inc. | -- |
| Faith United Pentecostal Church Inc. C/O Rev Patrick D Vossen | -- |
| Families Helping Families | -- |
| Forgotten Felines Inc. | -- |
| Friends of Clinton Youth and Family Service Bureau Inc. | -- |
| George Flynn Classical Concerts Inc. | 4 |
| Henry Carter Hull Library Inc. | -- |
| International Association of Hispanic Firefighters Iahf Inc. | -- |
| Morgan School Fund 9525000917 | -- |
| Old Saybrook Youth Football Activities League Inc. | -- |
| Opera Theater of Connecticut Inc. | -- |
| Red Wing Foundation Inc. | -- |
| Robert Dibona Scholarship Fund Inc. | -- |
| Search Ministry Inc. | -- |
| Social Studies Research Inc. | 4 |
| The Bea and Shailer Breck Foundation | 4 |
| Wind Over Wings Inc. | -- |