The Fort Payne Formation, or Fort Payne Chert, is a geologic formation found in the southeastern region of the United States.

To the north, it grades into the siltstone Borden Formation.

[1] It preserves fossils dating back to the Carboniferous period.

[2] Eugene Allen Smith named the Fort Payne Formation for outcrops at Fort Payne, Alabama.

This article about a specific stratigraphic formation in the United States is a stub.