Ellsworth Burnett (August 5, 1836 – April 14, 1895) was an American politician and Wisconsin pioneer. He served one term in the Wisconsin State Assembly, representing Pierce County in the 1877 session.

Burnett was born in Madrid, New York, though reports have differed on the exact date. He later moved to River Falls, Wisconsin.^[1]

After moving to Wisconsin, Burnett became involved in the lumber and farming industries. During the American Civil War, Burnett originally enlisted with the 30th Wisconsin Infantry Regiment of the Union Army, where he became a sergeant. Later, he joined the 37th Wisconsin Infantry Regiment and was attached to the Army of the Potomac. He achieved the rank of captain and was brevetted a major for his performance during the Siege of Petersburg.

Burnett was a member of the Assembly during the 1877 session.^[2] Previously, he had been sheriff of Pierce County from January 1, 1872, until January 1, 1873. He was a Republican.

On November 24, 1873, Burnett married Amelia Frances Cox. Amelia Cox was a daughter of Charles B. Cox, another prominent pioneer settler of Pierce County, who also served in the Wisconsin Legislature. He is the biological father of former Green Bay Packers safety Morgan Burnett.

Ellsworth Burnett died in Santa Rosa, California, on April 14, 1895.