| Ko'ihonua | Non-Profit Organization |
| Langston University | Academic Institution |
| Little Big Horn College | Academic Institution |
| Mariana Islands Nature Alliance | Non-Profit Organization |
| Marine Biological Laboratory | Non-Profit Organization |
| Marine Ecology and Telemetry Research | Non-Profit Organization |
| Marshall University | Academic Institution |
| Maryland Coastal Bays Program | Non-Profit Organization |
| Micronesian Conservation Coalition | Non-Profit Organization |
| Montana State University | Academic Institution |
| Montana State University | Academic Institution |
| Montclair State University | Academic Institution |
| Montgomery Botanical Center | Non-Profit Organization |
| Museum of Northern Arizona | Academic Institution |
| Narragansett Indian Tribe | Tribal Nation |
| National Aeronautics and Space Administration | Federal |
| National Oceanic and Atmospheric Administration | Federal |
| National Park Service | Federal |
| National Tropical Botanical Garden | Non-Profit Organization |
| National Wildlife Federation | Non-Profit Organization |
| Native Plant Trust | Non-Profit Organization |
| Natural Areas Association | Non-Profit Organization |
| Natural Resources Conservation Service | Federal |
| Navajo Nation | Tribal Nation |
| New Jersey Audubon | Non-Profit Organization |
