| Name | Deductibility Code |
| Grizzly Discovery Center A Not- for-Profit Corporation | -- |
| Henrys Lake Foundation | -- |
| Madison Gallatin Wild Trout Foundation | -- |
| West Yellowstone Community Task Force | -- |
| West Yellowstone Foundation | -- |
| West Yellowstone Historical Society | -- |
| West Yellowstone Public Library Foundation Inc. | -- |
| West Yellowstone Ski Education Foundation | -- |
| Western Heritage Arts Center Inc. | -- |
| Yellowstone Historic Center Inc. | -- |
| Yellowstone Senior Social Center Inc. | -- |
| Yellowstones Cross Country Race Inc. | -- |