The Kootenay Group, originally called the Kootenay Formation,[1][2] is a geologic unit of latest Jurassic to earliest Cretaceous age in the Western Canada Sedimentary Basin that is present in the southern and central Canadian Rockies and foothills.

[3] It includes economically important deposits of high-rank bituminous and semi-anthracite coal,[4] as well as plant fossils and dinosaur trackways.

[2] The Kootenay Group is an eastward-thinning wedge of sediments derived from the erosion of newly uplifted mountains to the west.

The sediments were transported eastward by river systems and deposited in a variety of river channel, floodplain, swamp, coastal plain, deltaic and shoreline environments along the western edge of the Western Interior Seaway.

[2] The Kootenay Group is present in the front ranges and foothills of the Canadian Rockies in southeastern British Columbia and southwestern Alberta.