| Leo A. Temmey | |
| Order2: | 15th Attorney General of South Dakota |
| Term Start2: | 1939 |
| Term End2: | 1943 |
| Governor2: | Harlan J. Bushfield |
| Predecessor2: | Clair Roddewig |
| Birth Date: | 6 November 1894 |
| Birth Place: | Onida, South Dakota |
| Death Place: | Huron, South Dakota |
| Party: | Republican |
| Profession: | Attorney |
| Education: | University of Minnesota (JD) |
Leo A. Temmey (November 6, 1894 – April 22, 1975) was an American attorney and 15th attorney general of South Dakota between 1939 and 1943. He was born in Onida, South Dakota.
Temmey was a Republican.
Temmey graduated from the University of Minnesota School of Law.[1]
On June 27, 1938, Temmey won the Republican nomination on the first ballot, defeating Charles H. McCay of Salem by a margin of 79,510 to 72,718 votes.[2]
Temmey was elected attorney general by defeating incumbent Democrat attorney general Clair Roddewig by a margin of 144,125 to 123,671 votes.[3]
Temmey was re-elected attorney general by defeating Democrat Andrew Foley by a margin of 170,269 to 122,173 votes.[4]
Temmey ran for governor in 1942, but he was defeated.[5]