| Type: | Formation |
| Period: | Ediacaran |
| Region: | Newfoundland and Labrador |
| Country: | Canada |
| Unitof: | Signal Hill Group |
| Underlies: | Blackhead Formation[1] |
| Overlies: | Quidi Vidi Formation |
| Map: | Cuckold Formation map.svg |
The Cuckold Formation is a stratigraphic unit of the Ediacaran Signal Hill Group, cropping out on eastern Newfoundland; it comprises red conglomerates and sandstones.