Adolphus Busch III (February 10, 1891 – August 29, 1946) was an American brewing magnate based in St. Louis, Missouri, who was the president and CEO of Anheuser-Busch from 1934 to 1946 during World War II.

His father, August A. Busch Sr., served as the chief executive officer of Anheuser-Busch from 1913 to 1934.

He and his first wife Florence McRhea Lambert (née Parker) had a daughter Marie Eleanor Busch (married Herbert D. Condie Jr.).

He and his second wife Catherine Milliken Bowen had a daughter Sallie Marie Busch (married Kenneth M. Wheeler Jr.).

He died on August 29, 1946, at Barnes Hospital in St. Louis, Missouri, of a cerebral hemorrhage.