John McGraw, American baseball player and manager (d. 1934)
John Joseph McGraw (April 7, 1873 – February 25, 1934) was an American Major League Baseball (MLB) player and manager who was for almost thirty years manager of the New York Giants. He was also the third baseman of the pennant-winning 1890s Baltimore Orioles teams, noted for their innovative, aggressive play.

McGraw was born into poverty in Truxton, New York. He found an escape from his hometown and a bad family situation through baseball, beginning a quick rise through the minor leagues that led him to the Orioles at the age of 18. Under the tutelage of manager Ned Hanlon, the Orioles of the 1890s won three National League (NL) pennants; McGraw was one of the stalwarts of the team alongside Wee Willie Keeler, Hughie Jennings, and Wilbert Robinson. The Orioles perfected the hit and run play and popularized the Baltimore chop; they also sought to win by intimidating the opposing team and the umpire.

The instability in MLB at the turn of the 20th century led to McGraw becoming manager of the Orioles at age 26 in 1899, and he was lauded for his leadership. The National League Orioles were dissolved after 1899, and McGraw spent one season with the St. Louis Cardinals before returning to Baltimore as player/manager of the new Orioles of the American League (AL). He quarreled with AL president Ban Johnson and jumped to the Giants in 1902, taking several Orioles players with him.

Through his just-short of thirty years managing the Giants, McGraw exerted control on players and team, and saw great success, winning ten pennants (matched only by Casey Stengel, who played for and learned from him) and three World Series. His 2,763 victories as an MLB manager ranks third overall behind only Connie Mack and Tony La Russa; he holds the NL record with 31 seasons managed. McGraw is widely held to be one of the greatest managers in baseball history. He retired, ill, in 1932 and died less than two years later after making a final appearance in 1933 as NL manager in the first All-Star Game.