William Harrison Mace (November 27, 1852 – August 10, 1938) was a professor of American history.

After graduating from Indiana State in 1876, Mace became a teacher for three terms in a country school.

[1] In 1881, he enrolled at the University of Michigan, where he studied history and received his degree with Phi Beta Kappa honors in 1883.

[2] After graduating from Michigan, Mace served as the superintendent of public schools in McGregor, Iowa from 1883 to 1885.

In 1885, he joined the faculty of DePauw University Normal School, serving as a professor of history from 1885 to 1890.