Garry Arthur Jestadt (born March 19, 1947) is an American former Major League Baseball infielder who played for the Montreal Expos, San Diego Padres and Chicago Cubs for all or portions of three seasons (1969 and 1971–1972).

Jestadt graduated from Fremont High School in Oakland, California, and attended Arizona State University.

Jestadt was selected by the Cubs in the seventh round of the first amateur draft in MLB history in June 1965.

After four seasons, during which Jestadt could not surpass the Double-A level, Montreal chose him with the 43rd pick in the October 1968 National League expansion draft.

But his original organization gave him only a three-game, three-at-bat "cup of coffee" in April 1971 before swapping him to the Padres on May 19 for veteran catcher Chris Cannizzaro.