Jonathan Hasson Wallace (October 31, 1824 – October 28, 1892) was an American lawyer and politician who served briefly as a United States Congressman from Ohio from 1884 to 1885. He is known for winning his seat in Congress in a contested election over incumbent Republican congressman, and future U.S. President, William McKinley in a contentious vote. The dispute over the outcome of the election rose all the way to the U.S. House, which named Wallace the winner.