Clarence E. Miller, American engineer and politician (d. 2011)
Clarence Ellsworth Miller, Jr. (November 1, 1917 – August 2, 2011) was a Republican Congressman from Ohio, serving January 3, 1967, to January 3, 1993.

He was born in Lancaster, Ohio, one of six children of an electrician father. After graduating from high school, he enrolled in correspondence school and became a certified electrical engineer. He worked for Columbia Gas and held patents related to the pumping of gas.Miller was elected to the U.S. House of Representatives in 1966 to represent a section of southeastern Ohio where, in Lancaster, he had served as mayor. During the Persian Gulf War, he was reportedly the only member of Congress who had a grandson (Drew Miller, of Lancaster, Ohio) fighting in that conflict.By training, he was an engineer, and The Almanac of American Politics wrote that Mr. Miller approached politics with the "precise and orderly manner" that one might expect from someone of his profession.