Charles Donald Jacob (June 1, 1838 – December 25, 1898) was an American politician who served four terms as mayor of Louisville, Kentucky, two consecutively in 1873-78, then later in 1882-84 and 1888-90.
He also served as the U.S.
minister to Colombia in 1885–1886.
He was a member of the Democratic Party.
In Mayor Jacob's third term, he oversaw the opening of the Southern Exposition.
Perhaps Jacob's most lasting contribution was his fourth-term establishment in 1889 of a large park in Louisville, today called Iroquois Park, which was landscaped by Frederick Law Olmsted.