William John Disch (October 15, 1872 – February 3, 1953) was an American baseball player and coach. He served as the head baseball coach at the University of Texas at Austin from 1911 to 1939 and as an advisory coach for 12 seasons afterwards. Often called the Connie Mack of college baseball, Disch earned a 513–180–12 record at Texas and garnered 20 Southwest Conference titles. At the time he coached, there were no NCAA postseason playoffs for national honors. Along with Bibb Falk, Disch is one of the two namesakes of UFCU Disch–Falk Field.
He was listed as a scout for the Boston Red Sox of Major League Baseball in 1948.