| Name | Deductibility Code |
| Bare Hill Rowing Association | -- |
| Barn School Inc. | -- |
| Camel Needle-Eye Corporation | 3 |
| Casey & Family Foundation Inc. | 4 |
| Church of Saint Alban the Partridge Hill Rd | -- |
| Citizens to Protect Residential Harvard | -- |
| Cross of Light Ministry | -- |
| Enlightenment Unlimited Inc. | -- |
| Evergreen Garden Inc. | 4 |
| Foresight Project Inc. | -- |
| Friends of Dominica Tropical Gardens | -- |
| Friends of the Harvard Public Library | -- |
| Fruitlands Museums Inc. | -- |
| Harvard Athletic Association Inc. | -- |
| Harvard Conservation Trust | -- |
| Harvard Help Inc. | -- |
| Harvard Historical Society | -- |
| Harvard Pto Inc. | -- |
| Harvard Public Library Trust Inc. | -- |
| Harvard Schools Trust Inc. | -- |
| International Partnership Network Inc. | -- |
| Just Understand My Potential Inc. | -- |
| Massachusetts Guardianship Association Inc. | -- |
| Menswork Inc. | -- |
| New England Special Activities Resources Inc. | -- |
| Oekos A Foundation for Education Inc. | 4 |
| Robert Perkins Fund Inc. | 4 |
| Sage Crossing Foundation Inc. | 3 |
| Sargent Youth Foundation Inc. | -- |
| Sharing A New Song Inc. | -- |
| Shelter Island Fund Inc. | -- |
| Sixty Plus Club of Harvard Inc. the | -- |
| Social Stimulus Incorporated | -- |
| The Harvard Town Band Inc. | 4 |
| The Madigan Family Foundation Inc. | 4 |
| Village Nursery School Inc. | -- |
| Village Theatree Project | -- |
| Virginia Thurston Healing Garden Inc. | -- |
| Wild Apples Inc. | -- |