Since 2016, through the leadership of the Ontario First Nations Technical Services Corporation (OFNTSC), with the participation of First Nation across the Province of Ontario, and with the financial support of the governments of Ontario and Canada, the authors have led the development and application of the award-winning (CEO 2019) First Nations Infrastructure Resilience toolkit. The latest version of the toolkit (June 2021) has been enhanced with additional climate data from 10 regions across Ontario and an asset management module with templates. The presentation will focus on the development, content and application of the toolkit with case studies to illustrate its use.