| Name | Deductibility Code |
| Clongowes Wood Foundation-Us Inc. | -- |
| Community School Association of Medfield Inc. | -- |
| Community Water Solutions | -- |
| Deluca Family Charitable Foundation Tr | 4 |
| Edward M Horton Charitable Foundation Inc. | -- |
| Ernie Clair Family Foundation Inc. | 4 |
| Friends of Albergue Hermano Pedro Inc. | -- |
| Friends of Medfield Forests & Trails Inc. | -- |
| Friends of Medfield Seniors Inc. | -- |
| Friends of Medfield Warriors Lacrosse Inc. | -- |
| Friends of the Dwight-Derby House in | -- |
| Friends of the Mentally Ill Inc. | -- |
| Gazebo Players of Medfield | -- |
| Graceful Stitches Inc. | -- |
| Greg Seery Charitable Foundation Inc. | 4 |
| Hannah Adams Scholarship Fund | -- |
| Harmony Center Inc. | -- |
| Infinite Light Spiritualist Church | 4 |
| Internet Users Society Niue | 4 |
| John A McNeice Jr Charitable Foundation | 4 |
| Library Trust Fund of Medfield Massachusetts | -- |
| Mailing Fund Inc. | -- |
| Massachusetts Association for Family and Community Education Inc. | -- |
| Mayflower Branch | -- |
| Medfield Afterschool Program Inc. | -- |
| Medfield Coalition for Public Education Inc. | -- |
| Medfield Community Cable Access Corporation | -- |
| Medfield Community Development Corporation | -- |
| Medfield Di | -- |
| Medfield Food Cupboard | -- |
| Medfield Foundation Inc. | -- |
| Medfield Girls Hockey Inc. | -- |
| Medfield High School Boosters Inc. | -- |
| Medfield Historical Society | -- |
| Medfield Home Committee | 5 |
| Medfield Music Boosters Inc. | -- |
| Medfield Youth Baseball-Softball Inc. | -- |
| Medfield Youth Hockey Assoc Thomas J Chadie | -- |
| Medfield Youth Lacrosse Inc. | -- |
| Medfield Youth Sports Boosters Inc. | -- |
| Metro West Premier Soccer | -- |
| Montrose Foundation Inc. | -- |
| Mustard Seed Communities Inc. | -- |
| Ray G Neary Colombian Orphans Fund | -- |
| The Auxiliary for Mentally Ill Inc. | -- |
| The Friends of the Medfield Memorial Public Library Inc. | -- |
| The Shannon McCormack Foundation Inc. | -- |
| Upper Charles Conservation Land Trust Inc. | -- |
| Winter Charitable Foundation Inc. | 4 |
| Zullo Gallery Center for the Arts | -- |