NESEA : The Northeast Sustainable Energy Association. A New England based resource which features, trainings, tours and an excellent conference in March.
NAPHN : North American Passive House Network-a cooperative of regional passive house organizations across Canada and US. Annual Conference changes location as regional group hosts.
PHIUS: The Passive House Institute US, offers trainings, tours and a conference in September.
The Passive House Database includes a global database of buildings registered through the international passive house organization, iPHA. Website includes many links to the global passive house movement.
Certified Passive House trainings can be found through these organizations: