| Name | Deductibility Code |
| Association of the Cotuit Mosquito Yacht Club Inc. | -- |
| Cape Cod Sustainable Living Center | -- |
| Class of 1969 Project | -- |
| Cotuit Athletic Association Inc. | -- |
| Cotuit Center for the Arts | -- |
| Cotuit Firefighters Association Inc. | -- |
| Cotuit Library Association | -- |
| Elementary School Heads Association | -- |
| Historical Society of Santuit & Contuit Inc. | -- |
| Marion Jordan Charitable Foundation | 4 |
| Mary Barton Land Conservation Trust | -- |
| St. Michael the Archangel Antiochian Orthodox Church Inc. | -- |
| The Cahoon Museum of American Art Inc. | -- |
| William R and Ruth D Cuming Char Foundation | 4 |