William D. Robinson (22 May 1826 – 7 November 1890) was a locomotive engineer who founded the Brotherhood of Locomotive Engineers (BLE) on 8 May 1863 during the American Civil War. The BLE has been called America’s earliest labor union. Robinson traveled widely and oversaw rapid growth in the union's first sixteen months. After a disastrous strike he was forced to resign in August 1864, and did not hold office again, although he remained active in union affairs until his death.