Ithamar Conkey Sloan (May 9, 1822 – December 24, 1898) was an American educator, lawyer, and politician.

[2] Born in Morrisville, New York, Sloan attended the common schools as a child, studied law and was admitted to the bar in 1848,[3] commencing practice in Oneida County, New York.

[3] He served as district attorney of Rock County, Wisconsin, from 1858 to 1862 before being elected a Republican to the United States House of Representatives in 1862.

Sloan moved to Madison, Wisconsin, in 1875 where he became dean of the law department at the University of Wisconsin–Madison and as a special counsel for the State of Wisconsin in the Granger Law cases from 1874 to 1879.

[4] His nephew, Henry Clay Sloan, was a member of the Wisconsin State Assembly.