William Smith O'Brien (January 8, 1862 – August 10, 1948) was a lawyer and Democratic politician from West Virginia who served as a United States representative from 1927 to 1929.He attended the common schools, the Weston Academy, and the West Virginia University at Morgantown.He was admitted to the bar the same year and commenced the practice of law in Buckhannon, West Virginia in Upshur County in 1892.He served as judge on the twelfth judicial circuit court of West Virginia from 1913 to 1919.This article incorporates public domain material from the Biographical Directory of the United States Congress