Wesley Livsey Jones (October 9, 1863 – November 19, 1932) was an American politician who served in the United States House of Representatives and the United States Senate representing the state of Washington.
Born near Bethany, Illinois days after the death of his father, who was serving in the Union Army during the American Civil War, Jones grew up working on farms. He taught school before graduating from Southern Illinois College in Enfield, Illinois. He studied law in Chicago, passed the bar, and became active in politics as a Republican. In 1889, he moved to North Yakima, in eastern Washington, where he worked in real estate and practiced law. In 1898, he was elected as a Republican to the United States House of Representatives, where he served five terms. He won a seat in the United States Senate in 1908; he served from 1909 until his death, and served in both leadership positions and as chairman of several Senate committees.