Henry Albert Bauer was an American right fielder and manager in Major League Baseball. He played with the New York Yankees (1948–1959) and Kansas City Athletics (1960–1961); he batted and threw right-handed. He served as the manager of the Athletics in both Kansas City (1961–62) and in Oakland (1969), as well as the Baltimore Orioles (1964–68), guiding the Orioles to the World Series title in 1966, a four-game sweep over the heavily favored Los Angeles Dodgers. This represented the first World Series title in the franchise's history.

The history of the Athletics Major League Baseball franchise spans the period from 1901 to the present day, having begun as a charter member franchise in the new American League in Philadelphia before moving to Kansas City in 1955 for 13 seasons and then to the San Francisco Bay in Oakland, California, in 1968. The team endured numerous attendance issues stemming from the aging Oakland Coliseum before the MLB owners approved the team's application to relocate to Las Vegas, Nevada in 2023. With four locations, the A's have had the most homes of any MLB team.