Ctenacodon is a genus of extinct mammal that lived in what is now North America during the Upper Jurassic period.

[1] Remains possibly referrable to Ctenacodon have been recovered from stratigraphic zone 2.

Remains were found in the Upper Jurassic strata of the Morrison Formation in Wyoming (United States).

Remains were found in Jurassic strata of the Morrison Formation of Wyoming.

The species Ctenacodon serratus, also named by Marsh in 1879, is also known from the Morrison Formation.