Note: Australia is generally considered to be a continental landmass, rather than an island. If however one does count Australia among the islands it, not Greenland, would be the largest in the world (unless one also considered Antarctica an island).
... River Indian Reservation[?]
Moapa River Indian Reservation[?]
Coeur D'Alene Indian Reservation[?]
Nez Perce Indian Reservation[?]
Fort Hall Indian ...