| Name | Deductibility Code |
| Am Foundation Inc. | 3 |
| Anita Louise Ehrmen Recreation | -- |
| Armonk Community Foundation | -- |
| Byram Hills Bobcat Boosters Inc. | -- |
| Byram Hills Education Foundation Inc. | -- |
| Byram Hills Preschool Association Inc. | -- |
| Byram Hills Youth Lacrosse Inc. | -- |
| Chang K Park Foundation | 4 |
| Chiefs Memorial Campership Fund Inc. | -- |
| Congregation B Nai Yisrael of Armonk | -- |
| Draizin Foundation Inc. | 4 |
| F 3 Foundation | 4 |
| Football Club of Westchester Inc. | -- |
| Friends of the North Castle Public Library Inc. | -- |
| Grace & Bert Lytell & Helen Menken Fndtn | 4 |
| Grant and Donna Berry Foundation | 4 |
| Grey Fox Foundation Inc. | 3 |
| H Carnie Lawson II Charitable Trust | 4 |
| Hailey Mae Foundation | -- |
| Heavenly Productions Foundation | -- |
| Heidecorn Family Foundation Inc. | 4 |
| Hershaft Family Foundation | 4 |
| Houston Family Foundation | 4 |
| Ibm International Foundation | 4 |
| Innercity Works Inc. | -- |
| International Association of Lions Clubs | -- |
| James E Robison Foundation | 4 |
| James R Gardner Foundation Inc. | 4 |
| Joseph B Corpina Jr Memorial Foundation Inc. | -- |
| Khan Universal Foundation Inc. | -- |
| Learning Team Inc. | -- |
| Magowan Family Foundation Inc. | 4 |
| Mbia Foundation Inc. | 4 |
| Messiahs House Inc. | 4 |
| Montessori Childrens Room | -- |
| Newmont Foundation Inc. | 4 |
| North Castle Beautification Foundation | -- |
| North Castle Historical Society | -- |
| Northern Westchester Swim Conference Inc. | -- |
| Parks Family Foundation | 4 |
| Race for Peace Inc. | -- |
| Reinventing American Schools Inc. | -- |
| Robert J Seifer Cancer Research Foundation | 4 |
| Robinson Cano Foundation | -- |
| Rogers Family Foundation Inc. | 4 |
| Rudolph & Josephine Dipalma Foundation | 4 |
| Ruth & Seymour Klein Foundation Inc. | 4 |
| Saul and Edna Glotzer Foundation Inc. | 4 |
| Starnet Emergency Services Inc. | -- |
| Starnet Transportation Services Inc. | -- |
| Stars Hockey Inc. | -- |
| Stellaris Health Network | -- |
| Steven Schwartzberg Foundation Inc. | 4 |
| Studio bn Alternative Space for Contemporary Art Inc. | -- |
| The Salon Family Foundation Inc. | 4 |
| Village Hope Foundation Inc. | -- |
| Whippoorwill Club Foundation Inc. | -- |
| Yudelson Foundation | 4 |