August "Garry" Herrmann (May 3, 1859 – April 25, 1931) was an American executive in Major League Baseball.
Herrmann was born in Cincinnati, Ohio on May 3, 1859 to a family of German descent. He served as president of the Cincinnati Reds of the National League from 1902 to 1927. He served as the president of National Baseball Commission from 1903 to 1920.
He filled the role of Baseball Commissioner before that position was officially established in 1920. With two other Commission members he established the annual nature of the World Series by 1905. According to biographer William A. Cook's August "Garry" Herrmann: A Baseball Biography, although Herrmann was financially successful, he had a reputation as a lavish entertainer, supported by news that he left an estate of ten dollars. He died on April 25, 1931, eight days before his 72nd birthday.
On July 19, 2008, Herrmann was posthumously inducted into the Cincinnati Reds Hall of Fame.