National Indian Health Board
The national organization that represents Tribal governments. Their website communicates links to toolkits, guidelines, and ongoing research on various topics such as oral health, zika, diabetes, methamphetamine, suicide, etc.
National Collaborating Center for Indigenous Health - Canada-based, but international in focus, produces environmental scans of indigenous health research and also hosts a database of "research institutes and organizations undertaking Indigenous health research and knowledge translation across Canada and internationally"