The following organizations are supporters of the Forest Biometrics Research Institute. Collectively, these organizations actively manage more than 10 million acres.
Endowments:
| Forest Biometrics, LLC | Montana |
| BIA – Midwest Regional Office | Minnesota |
| BIA – Pacific Northwest Regional Office | Oregon |
| Bloedel Timberlands | Washington |
| Duck Creek Associates | Oregon |
| Edgewater Timber Company | Idaho |
| Free State Drivers | Montana |
| Forest Analytics, LLC | Oregon |
| ForesTree Dynamics | British Columbia |
| FORSight Resources, LLC | Washington |
| Grand Ronde Tribe | Oregon |
| Hansen Timber Management | Idaho |
| Hood River County Forestry | Oregon |
| Inland Forest Management | Idaho |
| International Forestry Consultants | Washington |
| J-Spear Ranch | Oregon |
| M Three Timber Company | Oregon |
| McKenzie River Associates | Oregon |
| Department of Natural Resources | Montana |
| Northwest Management | Idaho |
| Quinault Tribal DNR | Washington |
| Silver Butte Lumber | Oregon |
| Siletz Indian Nation | Oregon |
| Stuntzner Engineering and Forestry | Oregon |
| Total Forestry | California |
| Terra Verde | Washington, California |
| Van Eck Foundation | Oregon, California |
Annual Contributors:
| Bennett Lumber Company | Idaho |
| Conservation Fund | California, Oregon |
| Collins Pine | Oregon, California |
| Forest Capital Partners | OR, WA, ID, LA, MN |
| Giustina Land & Timber | Oregon |
| GMO Renewable Resources | Amherst, Maine |
| Green Crow | Washington |
| Green Diamond Resource | Washington, California |
| Gualala Redwoods | California |
| Lone Rock Timber | Oregon |
| Longview Fibre | Oregon, Washington |
| Merrill-Ring Tree Farms | Washington |
| Moore Mill | Oregon |
| Nez Perce Tribe | Idaho |
| Port Blakely Timberlands | Washington, Oregon |
| Potlatch Corporation | Idaho |
| Rosboro Forest Products | Oregon |
| Roseburg Resources | Oregon, California |
| SDS Lumber | Washington |
| Sealaska Corporation | Alaska |
| Seneca Jones | Oregon |
| Starker Forests | Oregon |
| Stimson Lumber | Oregon, Washington |
| Umatilla Tribe | Oregon |
| West Fork Timber, LLC | Washington |
| Warm Springs Nation | Oregon |