Charles August Sulzer (February 24, 1879 – April 15, 1919) was a veteran of the Spanish-American War veteran who served as a delegate to the United States House of Representatives from the Territory of Alaska from 1917 to 1919.

He attended the public schools, Pingry School in Elizabeth, New Jersey, Berkeley Academy in New York City, and the United States Military Academy at West Point, New York.

During the Spanish–American War, he served with the Fourth Regiment, New Jersey Volunteer Infantry.

After the war, Charles Sulzer moved to Alaska in 1902 and engaged in mining.

He presented his credentials as a Democratic delegate-elect to the Sixty-fifth Congress and served from March 4, 1917, to January 7, 1919, when he was succeeded by James Wickersham, who had contested his election.