Horace Birney Willard (May 2, 1825 – April 1, 1900) was an American medical doctor, businessman, Republican politician, and Wisconsin pioneer.

He served one term in the Wisconsin State Assembly, representing Jefferson County.

He studied medicine under William B. Coye in Gilbertsville, New York, then received a scholarship sponsored by the state.

After a year of travel, Willard settled in Lake Mills, Wisconsin, in 1857, again practicing medicine.

[1] Present at its original state convention, Willard was an early member of the Republican Party in Wisconsin.

Later in his life, Willard was known for his independent political stances, supporting Horace Greeley and Samuel J. Tilden for president.