Camas Creek is a long river in southern Idaho, United States, that is a tributary of the Big Wood River.
Beginning at an elevation of west of Hill City in eastern Elmore County, it flows east into Camas County, where it is roughly paralleled by U.S. Route 20. About east of Fairfield, it forms the CamasâÂÂBlaine county line and continues east to its mouth at Magic Reservoir, at an elevation of . Camas Creek has a watershed.