| Name | Deductibility Code |
| Adams County Economic Development Council | -- |
| Adams County Public Hospital District 3 | -- |
| Bess Hampton Memorial Gardens Association | 6 |
| Centro Cristiano Vida Nueva | -- |
| Columbia Basin Health Association | -- |
| Community Museum & Arts Society | -- |
| Council for Development of Hispanics | -- |
| Freedom House Christian Fellowship | -- |
| Lasting Legacy Wildlife Museum | -- |
| Mid-Columbia Christian School | -- |
| Old Hotel | -- |
| Othello Church of Christ | -- |
| Othello Community Scholarship Fund | -- |
| Othello Food Bank | -- |
| Othello Huskie Hoop Club | 4 |
| Othello Literacy Council | -- |
| Othello Sandhill Crane Festival | -- |
| Othello Senior Citizen | -- |
| Othello-Adams County Fire District 5 Firefighters Association | -- |