| Name | Deductibility Code |
| Dewey Band Boosters | -- |
| Dewey Ladies Auxillary | 4 |
| Dewey Public School District Support Foundation | -- |
| Dewey Recreation Association Inc. | -- |
| Fountain of Life Tabernacle Inc. | -- |
| Friends of the Dewey Public Library | -- |
| Lacemakers Guild of Oklahoma | -- |
| Life Church Inc. | -- |
| Lifespan Health Care Inc. | -- |
| Older Citizens Services Inc. | -- |
| One Mile Youth Sports Center | -- |
| Ray of Hope Ranch | -- |
| Tom Mix Museum Inc. | -- |
| Washington County Conservation Foundation | -- |
| Washington County Senior Citizens Inc. | -- |
| Washington County Stock Show Association | -- |