Albert Gallatin Porter (April 20, 1824 – May 3, 1897) was an American politician who served as the 19th governor of Indiana from 1881 to 1885 and as a United States Congressman from 1859 to 1863. Originally a Democrat, he joined the Republican Party in 1856 after being expelled by the pro-slavery faction of the Democratic Party. Only the second person born in Indiana to become the state's governor, he reluctantly accepted his party's nomination to run. His term saw the start of Indiana's industrialization that continued for several decades. During the second half of his term a strong Democratic majority took control of the Indiana General Assembly and revoked all of the governor's appointment powers and other authorities, weakening the governors position to its lowest state in the history