William Henderson Cate (born November 11, 1839) was a Democratic member of the United States House of Representatives from Arkansas. He represented Arkansas’s 1st Congressional District and served as a historical member of Congress during the late nineteenth century. His tenure in federal office places him among the notable Democratic lawmakers from Arkansas of that era.

Cate served two terms in the U.S. House of Representatives, holding office from December 2, 1889, to March 3, 1893. During this period, he represented the 1st District of Arkansas in the House as a Representative, reflecting the political alignment of his state and district within the Democratic Party at the time. His service concluded in 1893, and he is recorded as a former member of Congress from Arkansas.