Walter Ellsworth Brehm (May 25, 1892 - August 24, 1971) was a U.S. Representative from Ohio.
Born in Somerset, Ohio, Brehm attended the public schools, Boston (Massachusetts) University, and Ohio Wesleyan University at Delaware, Ohio. He was graduated from the Ohio State University Dental School at Columbus in 1917. He worked in steel mills, rubber factories, and oil fields after graduation from high school. He served as member of Company D, Seventh Regiment, Ohio Infantry from 1908 to 1913. He engaged in the practice of dentistry in Logan, Ohio from 1921 to 1942. Treasurer of the Republican executive committee of Hocking County, Logan City Council from 1936 to 1938. He served in the State house of representatives 1938-1942.
Brehm was elected as a Republican to the Seventy-eighth and to the four succeeding Congresses (January 3, 1943-January 3, 1953). He was not a candidate for reelection in 1952 to the Eighty-third Congress. He resumed the practice of dentistry and affiliated with a dental supply company after retirement from active practice. Resided in Columbus, Ohio, until his death there August 24, 1971.