James Lawrence Deidel (born June 6, 1949, in Denver, Colorado) is a former Major League Baseball catcher. He bats and throws right-handed. Deidel was drafted by the New York Yankees in the 15th round (126th overall) of the 1967 Major League Baseball Draft. He played only in 1974 with the Yankees. He had two at-bats, in two games, going 0–2.