| Walter Emanuel Treanor | |
| Office: | Judge of the United States Court of Appeals for the Seventh Circuit |
| Term Start: | December 27, 1937 |
| Term End: | April 26, 1941 |
| Appointer: | Franklin D. Roosevelt |
| Predecessor: | Samuel Alschuler |
| Successor: | Sherman Minton |
| Birth Name: | Walter Emanuel Treanor |
| Birth Date: | 17 November 1883 |
| Birth Place: | Loogootee, Indiana, US |
| Resting Place: | Walnut Hill Cemetery (Petersburg, Indiana) |
| Education: | (AB) Indiana University Maurer School of Law (LLB) Harvard Law School (SJD) |
Walter Emanuel Treanor (November 17, 1883 – April 26, 1941) was a United States circuit judge of the United States Court of Appeals for the Seventh Circuit.
Born in Loogootee, Indiana, Treanor received an Artium Baccalaureus degree from Indiana University Bloomington in 1912, a Bachelor of Laws from Indiana University Maurer School of Law in 1922, and a Doctor of Juridical Science from Harvard Law School in 1927.[1] He was in the United States Army during World War I from 1917 to 1919, achieving the rank of Second Lieutenant. He was a professor of law at Indiana University Maurer School of Law from 1922 to 1930. He was a justice of the Indiana Supreme Court from 1930 to 1936.
On December 11, 1937, Treanor was nominated by President Franklin D. Roosevelt to a seat on the United States Court of Appeals for the Seventh Circuit vacated by Judge Samuel Alschuler. Treanor was confirmed by the United States Senate on December 21, 1937, and received his commission on December 27, 1937. Treanor served in that capacity until his death on April 26, 1941. He was interred in Walnut Hill Cemetery, Petersburg, Indiana.[2]