Clayton Lake is a small recreational lake in Pushmataha County, Oklahoma. It is located 5 miles (8.0 km) south of Clayton, Oklahoma.

The lake, which was built in 1935, impounds the waters of Peal Creek. It is operated as Clayton Lake State Park by the State of Oklahoma. The state park offers rental cabins, tent and RV campsites, picnic tables and shelters, comfort stations with showers, boat ramps, ADA accessible fishing dock, playground, hiking trails and swim beach. It is a popular fishing and camping spot due to its scenic location nestled among the Kiamichi Mountains, surrounded by pine tree forests.

Clayton Lake comprises 66 acres (270,000 m) of area and 2 miles (3.2 km) of shoreline. Normal pool elevation is 665 feet (203 m) above sea level. Its normal holding capacity is 953 acre-feet (1,176,000 m).

• List of lakes of Oklahoma

• Clayton Lake State Park information, photos and video on TravelOK.com Official travel and tourism website for the State of Oklahoma