- Lisa MacGillivrayMassachusetts Natural Heritage & Endangered Species ProgramConservation Data Specialist
- Meredith MalonePennsylvania Natural Heritage ProgramForest Program Specialist(717) 743-6123
- Misty-Anne MaroldMassachusetts Natural Heritage & Endangered Species ProgramEndangered Species Review Biologist(508) 389-6356
- Everett MarshallVermont Natural Heritage InventoryNatural Heritage Information Manager(802) 371-7333
- Aída Martínez-MedinaPuerto Rico: División de Patrimonio Natural, Puerto RicoDirectora(787) 999-2200
- Suzanne MasonNorth Carolina Natural Heritage ProgramConservation Data Manager(919) 707-8056
- Sean MatthewsOregon Biodiversity Information CenterAssociate Research Faculty(530) 351-2418