William Wallace Smith Bliss (August 17, 1815 – August 5, 1853) was a United States Army officer and mathematics professor. A gifted mathematician, he taught at West Point and also served as a line officer.
He received an A.M. from Dartmouth College in 1848. In December 1848 Bliss married Mary Elizabeth Taylor, youngest daughter of the newly elected US President Zachary Taylor, whom he would serve as Presidential Secretary. Five years later Bliss contracted yellow fever in New Orleans and died at the age of 37.
Having become interested in the various Native American tribes, Bliss learned a number of their languages and studied their cultures. He was a member of the Royal Society of Northern Antiquaries of Copenhagen, Denmark, and an Honorary Member of the American Ethnological Society. Gifted at languages, he was fluent in at least thirteen.
Born in Whitehall, New York, he was the son of Captain John Bliss (of Lebanon, New Hampshire) and Olive Hall Simonds (of Todd County, Kentucky). John Bliss was an 1811 graduate of West Point.
Bliss entered the United States Military Academy on September 1, 1829. He showed very great mathematical gifts while a student. He graduated July 1, 1833 (not yet 18 years old) as a Second Lieutenant in the 4th Infantry Regiment. It was his choice to serve in the infantry.