| Name | Deductibility Code |
| American Newspaper Repository | -- |
| Berwick Academy Parents Association | -- |
| Central School Parent Teacher Organization | -- |
| Community Chorus at South Berwick | -- |
| First Baptist Church | -- |
| Friends of the South Berwick Library Inc. | -- |
| Garvey House Inc. | -- |
| Gospel Music Project | -- |
| Great Works Regional Land Trust | -- |
| Great Works River Watershed Coalition | -- |
| Greenwood | -- |
| Marshwood Education Foundation | -- |
| Old Berwick Historical Society | -- |
| Seacoast Christian School | -- |
| So Berwick Teen Center | -- |
| South Berwick Cemetery Association | 6 |
| South Berwick Childrens Leadership Council | -- |
| South Berwick Rotary Charitable Fund | -- |
| South Berwick Youth Soccer Inc. | -- |
| Southern Maine Dawg Pound Inc. | -- |
| The Dunnybrook Historical Foundation Inc. | -- |