| Name | Deductibility Code |
| 33 Touchdown Club Inc. | -- |
| Addictions Referral Center Inc. | -- |
| Amsa Charter School Foundation Inc. | -- |
| Anglican Minstry of the Holy Cross | -- |
| Assabet River Rail Trail Inc. | -- |
| Assabet Valley Collaborative Foundation Inc. | -- |
| Assembleia De Deus Filadelfia | -- |
| Association of Game & Puzzle Collectors | -- |
| Birthright of Hudson-Marlborough Inc. | -- |
| Cancer Resource Foundation | -- |
| Centro Cristiano Emanuel | -- |
| Child Protection Resources Inc. | -- |
| Church of Christ in Marlborough Inc. | -- |
| Dcu for Kids | -- |
| Edaville Foundation Inc. | 4 |
| Employment Options Inc. | -- |
| First Baptist Brazilian Church of Marlboro | -- |
| Friends of the Assabet River National Wildlife Refuge Inc. | -- |
| Friends of the Marlborough Public Library Inc. | -- |
| Greater Grace Christian Fellowship | -- |
| Greater Marlboro Programs Incorporated | -- |
| Haven of Hope Inc. | -- |
| Health Excellence Inc. | -- |
| Hillside School | -- |
| Igreja Presbiteriana Renovada NA America Inc. | -- |
| Kane Elementary School Pto Inc. | -- |
| Leblanc Youth Trust Fund Inc. | -- |
| Light of India Charity | -- |
| Loewy Charitable Foundation Arthur F Loewy Ttee | 4 |
| Marlborough Community Development Corporation | -- |
| Marlborough Community Services Inc. | -- |
| Marlborough Country Club Charities Inc. | -- |
| Marlborough Education Foundation Inc. | -- |
| Marlborough Historical Society Inc. | -- |
| Marlborough Intermediate Elementary Pto Inc. | -- |
| Marlborough Middle School Pto Inc. | -- |
| Marlborough Public Library Foundation Inc. | -- |
| Marlborough Public Schools Education Foundation Inc. | -- |
| Marlborough Regional Community Foundation Inc. | -- |
| Marlborough Rotary Charitable Endowment Inc. | -- |
| Marlborough Sports Partnership Inc. | -- |
| Marlborough Youth Lacrosse Inc. | -- |
| Massachusetts Elementary School Principals Education Foundation | -- |
| Massachusetts Veterinary Medical Association Charities Inc. | -- |
| Metro Church | -- |
| Metrowest Animal Awareness Society Inc. | -- |
| Moonstruck Theater Company | -- |
| National Investment Company Service Association Inc. | -- |
| National School Development Council Inc. | -- |
| New Covenant Christian School Inc. | -- |
| Olde Marlborough Inc. | -- |
| Operation Healthy Smile Inc. | -- |
| Options Properties Inc. | -- |
| Pine Grove Inn | -- |
| Qun Huang Educational Fund Inc. | -- |
| Reach Out for Schools | -- |
| Richer Elementary School Pto Inc. | -- |
| Saint Chads Missionary Society Inc. | -- |
| Sgt Charles J Jaworek Elementary School Pto Inc. | -- |
| Tech Corps | 1 |
| The Marlborough Foundation Inc. | 4 |
| Triboro Youth Hockey Association Inc. | -- |
| Veterans Outreach Center Metrowest Incorporated | -- |
| Windward Associates | -- |