Glen Patrick Cook (born September 8, 1959) is an American former baseball player who played in Major League Baseball as a pitcher for one season. He pitched in nine games, starting seven of them for the Texas Rangers during the 1985 Texas Rangers season. He was promoted to the majors on June 20, 1985 to fill a vacancy in the starting rotation left after the Rangers traded away Frank Tanana. At the time, his wife, Linda Ann, formerly of Lawton, Oklahoma, was expecting a baby.