Deadwood Creek is a stream in the Sawtooth National Forest in Camas County, Idaho in the United States. It is a tributary of the South Fork Boise River, which in turn is tributary to the Snake River and Columbia River. Deadwood Creek originates in the Soldier Mountains, then flows north to the South Fork of the Boise River. Trails 054 and 091 follow Deadwood Creek for much of its length, although there is no bridge at the stream's mouth to cross the South Fork of the Boise River to reach forest road 227.