William Lewis Cabell (January 1, 1827 – February 21, 1911) was an American engineer, lawyer, businessman, and politician who served as the 14th, 16th and 20th mayor of Dallas (1874–1876, 1877–1879 and 1883–1885). Prior to that, he was a senior officer of the Confederate States Army who commanded infantry in the Western and Trans-Mississippi theaters of the American Civil War.