Jeremiah McLain Rusk was an American Republican politician. He was the second United States secretary of agriculture (1889–1893) and the 15th governor of Wisconsin (1882–1889), and served three terms in the United States House of Representatives (1871–1877), representing northwest Wisconsin. He also served as a Union Army officer during the American Civil War, served one term in the Wisconsin State Assembly (1862), and was the last Bank Comptroller of Wisconsin (1866–1870) before the office was abolished.

The United States secretary of agriculture is the head of the United States Department of Agriculture. The position carries similar responsibilities to those of agriculture ministers in other governments.