William Paul Brady (February 12, 1876 – February 27, 1943) was an American lawyer who, between 1909 to around 1914, served as the first district attorney for Texas' 70th judicial district. With jurisdiction over eleven western counties, he was the judge for the newly created El Paso County Court at Law from 1917 to 1919. Brady prosecuted several high-profile murder cases as a district attorney, including of Agnes Orner, and in a death-penalty case that has since been termed a "legal lynching" of a Mexican boy charged with killing a white woman.