The Rundle Group is a stratigraphical unit of Mississippian age in the Western Canadian Sedimentary Basin.

The Rundle Group reaches a maximum thickness of 741 feet (230 m) at Tunnel Mountain.

[1] The Rundle Group is disconformably overlain by the Rocky Mountain Formation in the front ranges of the Canadian Rockies and by the Fernie Formation in the foothills and by Cretaceous beds in the prairies.

[1] The Rundle Group can be correlated with the Mission Canyon Formation in southern Saskatchewan, northeastern Montana and North Dakota.

[1] Debolt, Shunda and Pekisko Formations are staked in the Fort Nelson area.