List of Major League Baseball batting champions

In baseball, batting average (AVG) is a measure of a batter's success rate in achieving a hit during an at bat. In Major League Baseball (MLB), it is calculated by dividing a player's hits by his at bats (AB). In MLB, a player in each league wins the "batting title" each season for having the highest batting average that year. The American League (AL) winner is known as the "Rod Carew American League Batting Champion", while the National League (NL) leader is designated the "Tony Gwynn National League Batting Champion". Under current rules, a player must have 3.1 plate appearances (PA) per team game (for a total of 502 over the current 162-game season) to qualify for the batting title. However, if a player's lead in AVG is sufficiently large that enough hitless at bats can be added to reach this requirement and the player still would have the highest batting average, he wins the title.Tony Gwynn, for example, had 159 hits in 451 ABs in 1996 (.353 average) but only 498 PAs. Gwynn's batting average would have dropped to .349 (159 hits in 455 ABs) with four hitless ABs added to reach the 502 PA requirement, but this would still have been higher than the next-highest eligible player (.344 average), so he was awarded the 1996 NL batting title.

The first batting average champion in the NL was Ross Barnes; in the league's inaugural 1876 season, Barnes batted .429 for the . The AL was established in 1901, and Hall of Fame second baseman Nap Lajoie led that league with a .426 average for the Philadelphia Athletics.Ty Cobb of the Detroit Tigers, who also holds the highest career batting average of .366, led the AL in average in 11 (or 12) seasons.Honus Wagner and Gwynn are tied for the second-most titles, with eight apiece in the NL. It is unclear whether Lajoie or Cobb won the 1910 AL title, with some sources attributing the title to each man. If Cobb is credited with the 1910 title, he won 9 consecutive titles from 1907 to 1915 and 12 total titles for his career. Otherwise, Rogers Hornsby won the most consecutive titles, with six from 1920 to 1925. Without the 1910 title, Cobb still led the league in five consecutive seasons from 1911 to 1915. Cobb holds the record for highest average in two and three consecutive seasons (.414 from 1911 to 1912 and .408 from 1911 to 1913), but Hornsby holds the record for four and five consecutive seasons (.404 from 1922 to 1925 and .402 from 1921 to 1925). Wagner, Rod Carew, Wade Boggs, and Gwynn have each won four consecutive titles. Lajoie also had a streak of four league-leading seasons from 1901 to 1904 if he is credited with the contested AL title in 1902. At the 2016 MLB All-Star Game in San Diego, MLB announced that the AL and NL batting champions would henceforth be named in honor of Carew and Gwynn, respectively. Gwynn won all eight titles in the NL with the San Diego Padres, while Carew was a seven-time AL batting champion.

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