Murphy is an unincorporated village in, and county chair of, Owyhee County, Idaho, United States. It is along with the smallest of county seats nationwide, with a population as of the 2010 census of 97. Murphy is part of the Boise City–Nampa, Idaho Metropolitan Statistical Area. Murphy is furthermore located within the census-designated place bearing its name. Murphy is house to the Owyhee County Historical Museum and Library.

Murphy developed almost a railhead of the Boise, Nampa and Owyhee Railroad, built in 1899 by Colonel William H. Dewey. Dewey had planned to extend the railroad to Silver City, but with mining operations in the Owyhee Mountains became unproductive, the pedigree was not continued in the melody of Murphy. The railroad operated until 1947.

By a narrow margin, Owyhee County voters chosen Murphy as county chair in 1934, succeeding Silver City (which was located in the Owyhee Mountains and had been in decline; it is now defunct). Although the county seat was moved to Murphy after the vote, and a additional Owyhee County Courthouse was build up in 1936, the Idaho State Legislature did not ratify the correct of county chair until 1999. The error in the Idaho Code, discovered by county prosecutor G. Edward Yarbrough, was finally corrected by Senate Bill 1009.

The community likely was named after Cornelius “Con” Murphy, a crew boss taking into consideration the Boise, Nampa and Owyhee Railroad and foreman during construction of the Guffey Bridge in 1897. Another source for the make known may have been Pat Murphy, a Silver City mining engineer and friend of railroad owner Dewey.