| Joseph H. Barnett | |
| Birth Date: | 3 November 1931 |
| Birth Place: | Sioux Falls, South Dakota, U.S. |
| Death Place: | Aberdeen, South Dakota, U.S. |
| Office1: | Member of the South Dakota House of Representatives |
| Term Start1: | 1967 |
| Term End1: | 1985 |
| Office2: | Speaker of the South Dakota House of Representatives |
| Term Start2: | 1975 |
| Term End2: | 1976 |
| Preceded2: | Gene N. Lebrun |
| Succeeded2: | Lowell C. Hansen II |
| Party: | Republican |
| Alma Mater: | Augustana College College of St. Thomas University of South Dakota School of Law |
| Relatives: | Steve Barnett (grandson)[1] |
Joseph H. Barnett (November 3, 1931 – May 1, 1985) was an American politician. He served as a Republican member of the South Dakota House of Representatives.[2]
Barnett was born in Sioux Falls, South Dakota. He attended Augustana College, the College of St. Thomas and the University of South Dakota School of Law.
Barnett served in the South Dakota House of Representatives from 1967 to 1985.
Barnett died on May 1, 1985 in Aberdeen, South Dakota, at the age of 53.