Joseph Simon was a German-born politician and attorney in the U.S. state of Oregon. He was born in Bechtheim, Hesse, and his family immigrated to the United States when he was one year old, settling in Portland, Oregon. A Republican, Simon served on the city council before election to the Oregon State Senate. He was later elected to the United States Senate for one partial term, 1898 to 1903. He later served as mayor of Portland for one term, 1909 to 1911.