Joseph Vincent McCarthy was an American manager in Major League Baseball, most renowned for his leadership of the "Bronx Bombers" teams of the New York Yankees from 1931 to 1946. The first manager to win pennants with both National and American League teams, he won a total nine league pennants and seven World Series championships – the latter is a record tied only by Casey Stengel. McCarthy was elected to the Baseball Hall of Fame in 1957. He recorded a 100-win season six times, a record matched only by Bobby Cox. McCarthy's career winning percentages in both the regular season (.615) and postseason are the highest in major league history. His 2,125 career victories rank ninth all-time in major league history for managerial wins, and he ranks first all-time for the Yankees with 1,460 wins.

In baseball, the field manager is the equivalent of a head coach who is responsible for overseeing and making final decisions on all aspects of on-field team strategy, lineup selection, training and instruction. Managers are typically assisted by a staff of assistant coaches whose responsibilities are specialized. Field managers are typically not involved in off-field personnel decisions or long-term club planning, responsibilities that are instead held by a team's general manager.