| Name | Deductibility Code |
| Alice Eaton Fund Inc. | 4 |
| Blackey Family Foundation | 4 |
| Boston Sea Rovers Inc. | -- |
| Clan Sutherland Foundation Ltd. | -- |
| Collings Foundation | 3 |
| Eye of the Storm Equine Rescue Inc. | -- |
| Friends of Lake Boon | 4 |
| Friends of Troop 1 Stow | -- |
| Haam Inc. | -- |
| Jericho Circle Project Inc. | -- |
| Kurian Foundation Trust | 4 |
| Lake Boon Improvement Association Inc. | -- |
| Mary Clark Regamey and David G Regamey Family Foundation | 4 |
| Massachusetts Association of Health Boards Inc. | -- |
| Massachusetts Chapter of the American Needlepoint Guild Inc. | -- |
| Nrhs Destination Imagination | -- |
| Randall Library Friends Association | -- |
| Randall Library Second Century Fund | -- |
| Red Acre Farm Inc. | 4 |
| Skylight Astronomical Society Inc. | -- |
| Sounds of Stow Inc. | -- |
| Stow Athletic and Recreation Supporters | -- |
| Stow Community Chest Incorporated | -- |
| Stow Conservation Trust Inc. | -- |
| Stow Counselling Services Inc. | -- |
| Stow Food Pantry | -- |
| Stow Friends of Music Inc. | -- |
| Stow Friends of the Council on Aging Inc. | -- |
| Stow Parent Teacher Organization Inc. | -- |
| Stow Soccer Club Inc. | -- |
| Suasco Watershed Community Council A Non Profit Corporation | -- |
| Sudbury Maynard Stow Youth Hockey Association Inc. | -- |
| Sudbury Parents for Child Care Services Inc. | -- |
| The Dunn Family Foundation | 4 |
| The Neutral Development Project Inc. | -- |
| Warm Hearts of Stow Inc. | -- |