How many American League teams have won the World Series?

There have 11 different American League teams to win 59 out of 100 played. Only two years since 1903 has it not played, 1904 and 1994. The team with the most wins is the New York Yankees with 27 championships followed by the A's franchise with 9 (4 Oakland, 5 Philadelphia and 0 with Kansas City). Other teams include Boston, Baltimore, Detroit, KC Royals, Cleveland, Minnesota, ChiSox, Toronto, and Anaheim.

Update:

Through 2009, there have been 105 World Series played. The American League has won 62 and the National League has won 43. The A.L. has a winning percentage of .590 and the N.L has a winning percentage of .410.

Here is the breakdown of the 11 A.L teams. The current name of the franchise is used:

New York Yankees - 27

Oakland Athletics - 9

Boston Red Sox - 7

Detroit Tigers - 4

Baltimore Orioles - 3

Minnesota Twins - 3

Chicago White Sox - 3

Cleveland Indians - 2

Toronto Blue Jays - 2

Kansas City Royals - 1

Los Angeles Angels - 1

A.L teams who have won the pennant, but never won a World Series are:

Milwaukee Brewers - 1 appearance

Tampa Bay Rays - 1 appearance

Texas Rangers - 1 appearance

A.L. teams who have never won a pennant are:

Seattle Mariners