Jack M. Murphy (September 6, 1925 – May 3, 1984) was a Republican politician from Idaho. He served as the 32nd Lieutenant Governor of Idaho between 1967 and 1975.Murphy was elected lieutenant governor in 1966 and served during the administration of Republican Governor Don Samuelson. He was reelected in 1970, although Samuelson was defeated by Democrat Cecil D. Andrus. In 1974 Murphy was the Republican nominee for Governor of Idaho, but was defeated by Andrus.