French Creek is an intermittent stream located in the Black Hills region of western South Dakota, USA. It is a tributary of the Cheyenne River.
It rises approximately 5 miles (8 km) northeast of Custer, South Dakota and extends for a length of 62 miles (100 km). It flows on a general eastward direction through Custer State Park and empties into the Cheyenne River near Red Shirt, South Dakota.
Gold was discovered in French Creek during an expedition led by George Armstrong Custer in 1874. This discovery triggered the Black Hills gold rush of the late 1870s.