William Allen "Scrappy" Moore (December 16, 1892 – October 13, 1964) was a college baseball player at Georgia Tech and Vanderbilt as well as a professional baseball player. He appeared in four games for the St. Louis Browns in 1917, primarily as a third baseman. He played for the Atlanta team of the Southern Association from 1918 to 1919, and with the Little Rock Travelers in 1920.