Casey Shawn Schmitt (born March 1, 1999) is an American professional baseball infielder for the San Francisco Giants of Major League Baseball (MLB). Schmitt played college baseball at San Diego State as both a pitcher and a third baseman. He was selected in the second round of the 2020 MLB draft by the Giants, and in 2022 he was named a Minor League Baseball Gold Glove, as the best defensive third baseman in the minor leagues. He made his MLB debut in 2023.