| Name | Deductibility Code |
| Animal Advocates | -- |
| Barnwell County Animal Shelter Foundation | -- |
| Barnwell County Art Council | -- |
| Barnwell County Commission on Alchohol and Drug Abuse | -- |
| Barnwell County Developmental Center Inc. | -- |
| Barnwell County Help Line Inc. | -- |
| Barnwell County Hospital Foundation | 4 |
| Barnwell County Library Foundation | -- |
| Barnwell County Rotary Foundation Inc. | -- |
| Barnwell County United Way | -- |
| Barnwell Development Association Inc. | -- |
| Barnwell IV Inc. | -- |
| Barnwell Recreation Commission Inc. | -- |
| Bethlehem Baptist Church Inc. of Barnwell | -- |
| Big 7 Association | -- |
| Boy Scout Troop 392 | -- |
| Boys and Girls Club of Southern Carolina | -- |
| Brown Chapel Baptist Church | -- |
| Carolina-Honduras Health Foundation | -- |
| Community Connections Inc. | -- |
| Country Trend Inc. 2107 Ellenton Rd | -- |
| Craigs Pond Carolina Bay Preserve Inc. | -- |
| Friends of the Library of Barnwell County Inc. | -- |
| Higher Grounds Community | -- |
| Living Waters Fellowship | -- |
| New Jerusalem Baptist Church | -- |
| Our Amazing Outreach Foundation | -- |
| Rosemary Baptist Church | -- |
| S C Regional Housing Foundation Inc. | 4 |
| Shepherd House Ministries Inc. | -- |
| Southeastern Housing Foundation | -- |
| Southern Carolina Regional Development Alliance | -- |
| Sunshine Foundation Inc. | 4 |
| The Circle Theatre Inc. | -- |
| The Jordan Baptist Church | -- |
| The Lighthouse Christian Fellowship Ministries | -- |