The Viking Formation is a stratigraphical unit of Cretaceous age in the Western Canadian Sedimentary Basin.

[1] Nodular phosphorite, coal fragments and concretionary siderite occur in the coarse beds.

Oil is produced from the Viking Formation in eastern and central Alberta as well as in west-central Saskatchewan.

The Viking Formation occurs in the sub-surface of central and eastern Alberta and in west-central Saskatchewan.

It can be correlated with the Cadotte Member of the Peace River Formation in north-western Alberta.