August Adolphus Busch IV is an American businessman and former CEO of Anheuser-Busch. He was the last of the family to control the company, which was purchased in a hostile takeover in 2008 by InBev. Busch IV was known for his marketing leadership, where his history as head of the Anheuser-Busch marketing department garnered ten straight USA Today Super Bowl Ad Meter awards, as well as awards at Cannes and the Grand Clio. He also served as a director of shipping giant FedEx. Busch has been involved in a number of legal incidents during his lifetime.

Adolphus Busch was the German-born co-founder of Anheuser-Busch with his father-in-law, Eberhard Anheuser. He introduced numerous innovations, building the success of the company in the late 19th and early 20th centuries. He became a philanthropist, using some of his wealth for education and humanitarian needs. His great-great-grandson, August Busch IV, is a former CEO of Anheuser-Busch.