| Dean T. Prosser | |
| Birth Date: | 10 May 1917 |
| Birth Place: | Cheyenne, Wyoming, U.S. |
| Office: | Member of the Wyoming House of Representatives |
| Term Start: | 1971 |
| Term End: | 1982 |
| Party: | Republican[1] |
| Alma Mater: | University of Colorado |
Dean T. Prosser[2] (May 10, 1917 – September 24, 2007) was an American politician. He served as a Republican member of the Wyoming House of Representatives.[3]
Prosser was born in Cheyenne, Wyoming to Dean and Dorothy Prosser.[4] He attended Cheyenne Central High School and the University of Colorado where he graduated with a Business Administration degree in 1939. He married Harriot Ann McSween in 1940 and together they had three children.
Prosser served in the Wyoming House of Representatives from 1971 to 1982. He served on a number of committees including Agriculture, Public Lands and Water Resources, Mines, Minerals and Industrial Development, Transportation and Highways, and Rules and Procedures He stood for re-election in 1882 but lost due to a Democratic sweep with only one Republican in the nine elected and with Prosser coming 14th.[5]
Prosser died on September 24, 2007,[6] at the age of 90.