William M. "Ad" Yale (April 17, 1870 – April 27, 1948) was a professional baseball player. He appeared in four games in Major League Baseball for the 1905 Brooklyn Superbas as a first baseman. He also had an extensive minor league baseball career, playing from 1897 until 1914 for a number of teams, primarily the Bridgeport Orators, for whom he played from 1898 to 1905.
Ad Yale
| Given name: | William M. Yale |
| Nicknames: | None |
| Primary Pos: | Firstbase |
| Hght/Wght: | Unknown / None lbs |
| Bats/Throws: | R / None |
| Born: | Apr 17, 1870 in Bristol, CT |
| Died: | Apr 27, 1948 in Bridgeport, CT (78 years old) |
| Debut: | Sep 18, 1905 |