William Esselstyne Lansing (December 29, 1821 – July 29, 1883) was a U.S. Representative from New York during the American Civil War.

[2] Entering politics as a Whig,[3] Lansing served as district attorney of Madison County, New York from 1850 to 1853.

[2] In 1860, Lansing was the successful Republican nominee for a seat in the United States House of Representatives.

[2] After leaving Congress, Lansing resumed the practice of law in Syracuse, New York.

[2] This article incorporates public domain material from the Biographical Directory of the United States Congress