Alvin Peterson Hovey (September 6, 1821 – November 23, 1891) was a Union general during the American Civil War, an Indiana Supreme Court justice, congressman, and the 21st Governor of Indiana from 1889 to 1891. During the war he played an important role in the Western theatre, earning high approval from Grant, and uncovered a secret plot for an uprising in Indiana. As governor, he launched several legal challenges to the Indiana General Assembly's removal of his powers, but was mostly unsuccessful. He successfully advocated election reform before he died in office.