The 1902 major league baseball season was contested from April 17 through October 5, 1902. It was the second season for the American League (AL), with the Philadelphia Athletics finishing first in league standings. In the National League (NL), in operation since 1876, the Pittsburgh Pirates finished atop league standings for the second consecutive season. There was no postseason.
Prior to the season, the Milwaukee Brewers moved and became the St. Louis Browns; the franchise would remain in St. Louis through 1953, and in 1954 moved again to become the Baltimore Orioles. The Cleveland Blues renamed as the Cleveland Bronchos.
The 1902 schedule consisted of 140 games for all teams in the American League and National League, each of which had eight teams. Each team was scheduled to play 20 games against the other seven teams of their respective league. This continued the format put in place for the 1901 season. This format would last until 1904, which saw an increase of games played.
National League Opening Day took place on April 17 with every team playing, while American League Opening Day did not take place until April 19, with a one-off game between the Baltimore Orioles and the Boston Americans, with the rest of the season beginning April 23. The American League would see its final day of the season on September 29, while the National League would see its final day of the season on October 5.