| Name | Deductibility Code |
| Adopt A Greyhound Inc. | -- |
| Around the Table Inc. | -- |
| Artsfalmouth Inc. | -- |
| C Joseph Oakes Scholarship Fund | 4 |
| Cape Cod Apartments Inc. | -- |
| Cape Cod Community Services Incorporated | 4 |
| Cape Cod Curling Club Inc. | -- |
| Cape Cod Theatre Project Inc. | -- |
| Carvier Foundation | -- |
| College Light Opera Company Inc. | -- |
| Committee to Encourage Public Art | -- |
| Coonamessett River Trust Inc. | -- |
| Falmouth Academy Incorporated | -- |
| Falmouth Artists Guild Inc. | -- |
| Falmouth Association Concerned With Estuaries and Salt Ponds Inc. | -- |
| Falmouth Band Parents Inc. | -- |
| Falmouth Baseball Club Inc. | -- |
| Falmouth Community Television Corporation Inc. | -- |
| Falmouth Economic Development and Industrial Corporation | -- |
| Falmouth Education Foundation Inc. | -- |
| Falmouth Girls Hockey Club Inc. | -- |
| Falmouth Harbor Sailing School Inc. | -- |
| Falmouth Historical Society | -- |
| Falmouth Hospital Auxiliary | -- |
| Falmouth Housing Corporation | -- |
| Falmouth Housing Trust Inc. | -- |
| Falmouth Public Library Foundation Inc. | -- |
| Falmouth Road Race Inc. | -- |
| Falmouth Service Center Inc. | -- |
| Falmouth Soccer Club Inc. | -- |
| Falmouth Theater Guild Inc. | -- |
| Falmouth Together We Can Inc. | -- |
| Falmouth Volunteers in Public Schools Inc. | -- |
| Falmouth Youth Hockey League Inc. | -- |
| Friends of Fairwinds Inc. | -- |
| Friends of Falmouth Dogs | -- |
| Friends of New Falmouth Senior Center | -- |
| Friends of the Falmouth Public Library Inc. | -- |
| Fundraising Players Incorporated | -- |
| George H Lusk Trust | 4 |
| Gosnold Inc. | -- |
| Greater Falmouth Mostly All-Male Mens Chorus Inc. | -- |
| Harvard Class of 1955 | -- |
| Harvard Club of Cape Cod | -- |
| Historic Highfield Inc. | -- |
| Instrumental Giving Group Inc. | -- |
| Intertribal Arts Project Inc. | 4 |
| Josephine and Louise Crane Foundation | 4 |
| Keeping Cape Cod Alive Inc. | -- |
| Lawrence School Pto | -- |
| Louise Crane Foundation | 4 |
| Lovell Charitable Fdn Res 452005010 | 4 |
| Margaret K Spohr and Charles D Spohr Charitable Trust - 1996 | 4 |
| Marjot Foundation Inc. | -- |
| Massachusetts Educational Assist Fund of the Mass Feder of Business | -- |
| Mastersingers by the Sea Charitable Trust | -- |
| Matthew W Houlihan Foundation Inc. | -- |
| Miskell Family Foundation Inc. | 4 |
| Morse Pond School Pto | -- |
| Mullen Hall Parent Teacher Organization Pto | -- |
| National Graduate School of Quality Management Inc. | -- |
| Neighborhood Falmouth Inc. | -- |
| Oak Grove Cemetery Association of Falmouth Inc. | 6 |
| Ocean Arks International Inc. | -- |
| Oyster Pond Environmental Trust Inc. | -- |
| Quissett Harbor Preservation Trust Inc. | 3 |
| Reel Blues Fest Inc. | -- |
| Samaritans on Cape Cod and the Islands Inc. | -- |
| Society of General Physiologists | -- |
| Stanley W Watson Foundation | 4 |
| The 300 Committee Inc. | -- |
| The Falmouth Chorale Inc. | -- |
| The Gosnold Foundation Inc. | -- |
| The Scholarship Association of Falmouth Inc. | -- |
| The Solstice Singers | -- |
| Ukrainian Village Fund Inc. | 4 |
| Upper Cape Chaplaincy | -- |
| Woods Hole Research Center Inc. | -- |