1904 Major League Baseball season
| 1904 MLB season | |
|---|---|
| League | American League (AL) National League (NL) |
| Sport | Baseball |
| Duration | April 14 – October 10, 1904 (AL) April 14 – October 9, 1904 (NL) |
| Games | 154 |
| Teams | 16 (8 per league) |
| Pennant winners | |
| AL champions | Boston Americans |
| AL runners-up | New York Highlanders |
| NL champions | New York Giants |
| NL runners-up | Chicago Cubs |
The 1904 major league baseball season was contested from April 14 to October 10, 1904. The Boston Americans and New York Giants finished atop the standings for the American League and National League, respectively. There was no postseason: with still no formal arrangement in place between the two leagues, the Giants declined to meet the Americans in the 1904 World Series. Going into the season, the Americans were the defending World Series from the 1903 season.
The St. Louis Browns and Detroit Tigers played 11 consecutive games against each other in September—the first six in Detroit and the final five in St. Louis—the most games played consecutively between two teams in major league history. The Chicago White Stockings shortened their name to the Chicago White Sox.