| Name | Deductibility Code |
| Alpha & Omega Inc. | -- |
| Alpha & Omega-Simchris Inc. | -- |
| Connecticut Chapter of the American Chestnut Foundation Inc. | -- |
| Crtstal Lake School Parent-Teacher Organization | -- |
| Crystal Lake Agricultural Youth Farm Inc. | -- |
| Crystal Lake Historical Society Inc. | -- |
| Ellington Baptist Church | -- |
| Ellington Community Scholarship Association Inc. | -- |
| Ellington Football Boosters Club Inc. | -- |
| Ellington Football League Inc. | -- |
| Ellington Volunteer Ambulance Corps Inc. | -- |
| Fellowship Bible Chapel | -- |
| Friends of the Hall Memorial Library Inc. | -- |
| S E E Hockey Boosters Inc. | -- |
| Society for the Study of School Psychology | -- |
| St. James USA Inc. | 4 |
| The Ellington Historical Society Inc. | -- |
| The Ellington Volunteer Fire Department Incorporated | -- |
| The Fourth River Project Inc. | -- |
| Vallee Foundation | 4 |
| Values Realization Institute Inc. | -- |
| Vernon Seniors Softball League Inc. | -- |
| Windemere Parent Teachers Organization | -- |