Welton Claude Ehrhardt (November 20, 1894 – April 27, 1980) was a pitcher in Major League Baseball. He pitched from 1924 to 1929 with the Brooklyn Robins and Cincinnati Reds. A right-hander, Ehrhardt's career was delayed while he served in the Navy in World War I, so that he was nearly 30 by the time he made his Major League debut. In 1926 and 1927, working mostly out of the bullpen, he ranked first in the National League in games finished, making 46 appearances during the 1927 season.