| Name | Deductibility Code |
| Dawn E Petersen Foundation Inc. | -- |
| Edith Reiter Tr | 4 |
| Seniors of Three Lakes Inc. | -- |
| Teaching Drum Outdoor School | -- |
| The Friends of Demmer Library Ltd. | -- |
| Three Eagle Trail Foundation Inc. | -- |
| Three Lakes Aqua Devils Waterski Club Inc. | -- |
| Three Lakes Area Education Foundation Inc. | -- |
| Three Lakes Center for the Arts in the Northwoods | -- |
| Three Lakes Community Health Foundation Inc. | -- |
| Three Lakes Fish & Wildlife Improvement Association | -- |
| Three Lakes Historical Society Inc. | -- |
| Three Lakes Lions Foundation Inc. | -- |
| Three Lakes Public Library Foundation Inc. | -- |
| Three Lakes Schoolcommunity Arts Association Inc. | -- |
| Three Lakes Waterfront Assn Inc. | -- |
| Three Lakes Womens Club Inc. | -- |
| Way Outfitters | -- |