The Ellerslie Member is a stratigraphic unit of Early Cretaceous age in the Western Canadian Sedimentary Basin.

It takes the name from Ellerslie, a community in southern Edmonton, and was first described in Imperial Oil's Whitemud No.

It occurs in the sub-surface in central and southern Alberta and south-western Saskatchewan.

The Ellerslie Member represents the lower part of the Mannville Group in southern and central Alberta.

It is conformably overlain by the Ostracod Beds of the Manville Group and rests unconformably on Paleozoic strata such as the Banff Formation or Pekisko Formation, often separated by a Detrital Zone.