Fort Ann Formation
Stratigraphic range: Ordovician
Type	Formation
Location
Region	New York
Country	United States

The Fort Ann Formation is a geologic formation in New York. It preserves fossils dating back to the Ordovician period.

• List of fossiliferous stratigraphic units in New York

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.