Chestnut Ridge is an unincorporated community in Ste. Genevieve County, in the U.S. state of Missouri.
A post office called Chestnut Ridge was established in 1860, and remained in operation until 1877. The community was named for the chestnut timber at a nearby ridge.
Coordinates: 37°47′53″N 90°20′11″W / 37.79806°N 90.33639°W