August Karl Herold (born August 7, 1902 in Neckarsulm, died there January 8, 1973) was a German grape breeder.Herold graduated from the Agricultural College Hohenheim in 1925, worked at a grape breeding station in Naumburg 1926-1928 and in 1928 became the head of a grape breeding station in Weinsberg, which during his early years was called Württembergischen Anstalt für Rebenzüchtung und Rebenpfropfung and from 1947 Staatliche Lehr- und Versuchsanstalt für Wein- und Obstbau (LVWO).