George Michael Steinbrenner III is a German-American billionaire businessman, and the principal owner of Major League Baseball's New York Yankees. His outspokenness and role in driving up player salaries have made him one of the sport's most controversial figures, though his willingness to spend to build the club have earned him grudging respect from some baseball executives, while at the same time earning him contempt from some non-Yankee fans.

He is known as a hands-on executive, earning the nickname "The Boss". His tendency to hire and fire managers led then-Yankees skipper Dallas Green to give him the derisive nickname "Manager George".