| Name | Deductibility Code |
| A Safe Place Inc. | -- |
| Admiral Sir Isaac Coffins Lacasterian School | -- |
| Albert F Egan Jr & Dorothy H Egan Foundation Inc. | 3 |
| Alliance for Substance Abuse Prevention Inc. | -- |
| Artists Association of Nantucket | -- |
| Blue Star Smiles Inc. | -- |
| Camp Richard Campers Association Inc. | -- |
| Community Foundation for Nantucket | -- |
| East Creek Inc. | -- |
| Family and Childrens Service of Nantucket County Inc. | -- |
| Faraway Stars Productions Ltd. | -- |
| Friends in Deed Inc. | 4 |
| Friends of Nantucket Public Schools Inc. | -- |
| Friends of the Council for Human Services Association | 4 |
| Friends of the Nantucket Atheneum Inc. | -- |
| Homestead Inc. of Nantucket | -- |
| Hospice Care of Nantucket Foundation | -- |
| Hospital Thrift Shop | -- |
| Inky Santas Toy Drive Inc. | -- |
| John H Van Winkle Foundation | 4 |
| Kenneth S Donnell Trust | 4 |
| Linda Loring Nature Foundation Inc. | 3 |
| Livingston Family Fund | 4 |
| M S Worthington Foundation | 4 |
| Maddequet Admiralty Association Scholarship Foundation Inc. | -- |
| Montessori Childrens House of Nantucket Inc. | -- |
| Nac Scholarship Fund Inc. | 4 |
| Nantucket Aids Network Inc. | -- |
| Nantucket Arts Council Inc. | -- |
| Nantucket Atheneum | -- |
| Nantucket Babe Ruth Baseball Inc. | -- |
| Nantucket Boosters Club | -- |
| Nantucket Boys & Girls Club Inc. | -- |
| Nantucket Center for Elder Affairs Inc. | -- |
| Nantucket Charitable Assoc Inc. | -- |
| Nantucket Childrens Depot Inc. | 4 |
| Nantucket Christian Fellowship Inc. | -- |
| Nantucket Civic League | -- |
| Nantucket Community Music Center | -- |
| Nantucket Community Sailing Inc. | -- |
| Nantucket Community Service II Inc. | -- |
| Nantucket Community Service Inc. | -- |
| Nantucket Conservation Foundation Inc. | -- |
| Nantucket Cottage Hospital | -- |
| Nantucket Cottage Hospital Foundation Inc. | -- |
| Nantucket Dolphins Swim Team Boosters Incorporated | -- |
| Nantucket Dreamland Foundation | -- |
| Nantucket Education Air Program Inc. | -- |
| Nantucket Education Trust Inc. | -- |
| Nantucket Firemens Association Inc. | 4 |
| Nantucket Flying Association Inc. | -- |
| Nantucket Garden Club Inc. | -- |
| Nantucket Group of Christian Scientists | -- |
| Nantucket Historical Association | -- |
| Nantucket Human Services Center Inc. | -- |
| Nantucket Hunting Association | -- |
| Nantucket Ice Company Inc. | -- |
| Nantucket Interfaith Council | -- |
| Nantucket Island School of Design and the Arts | -- |
| Nantucket Junior Miss Scholarship Program Inc. | -- |
| Nantucket Land Council Inc. | -- |
| Nantucket Lighthouse School Inc. | -- |
| Nantucket Lightship Basket Museum | -- |
| Nantucket Maria Mitchell Assoc | -- |
| Nantucket Musical Arts Society Inc. | -- |
| Nantucket Preservation Trust Inc. | -- |
| Nantucket Shellfish Association Inc. | -- |
| Nantucket Skating Club Inc. | -- |
| Nantucket Sports & Therapeutic- accessible Recreation Inc. | -- |
| Nantucket Student Lacrosse | -- |
| Nantucket Student Soccer Association Inc. | -- |
| Nantucket Sustainable Development Corporation | -- |
| Nantucket Therapeutic Equestrian Center | -- |
| Nantucket Yacht Club Foundation Inc. | -- |
| Nantucket Youth Hockey Inc. | -- |
| New Life Ministries International | -- |
| Nha Properties Inc. | -- |
| Parents Cooperative of Nantucket Inc. | -- |
| Partnership for Harrier Habitat Preservation Inc. | 4 |
| Preservation Institute Nantucket Inc. | -- |
| Prospect Hill Cemetery Association | 6 |
| Prospect Hill Cemetery Charitable Trust | 3 |
| Save Our Waterfront Inc. | -- |
| Seaside Shakespeare Festival Inc. | -- |
| Sherburne Commons Inc. | -- |
| Siasconset Beach Preservation Fund Inc. | -- |
| Small Friends on Nantucket Inc. | -- |
| South Church Preservation Inc. | -- |
| Spiritual Heritage Nantucket | -- |
| Strongs Wings Inc. | -- |
| The Empty Nose Syndrome Association Inc. | -- |
| Theatre Workshop of Nantucket Inc. | -- |
| Tuckernuck Land Tr Inc. | -- |
| Two Centre Street Restoration Project Inc. | -- |