| Name | Deductibility Code |
| American Rsdhope | -- |
| Association of Teachers of Mathematics in New England | -- |
| Christmas in Harrison Inc. | -- |
| Deertrees Foundation Limited | -- |
| Harrison Historical Society C/O Mary T Carlson | -- |
| Harrison School Age Child Care and Enrichment Program | -- |
| Harrison Village Library | -- |
| Island Pond Watershed Association | -- |
| Scribners Mill Preservation Inc. | -- |
| Sebago-Long Lake Region Chamber Music Festival Inc. | -- |
| Stone Environmental Schools of New England | -- |