The 1912 Boston Red Sox season involved the Red Sox finishing 1st in the American League with a record of 105 wins and 47 losses. Behind center fielder Tris Speaker and pitcher Smoky Joe Wood, they led the league in runs scored and fewest runs allowed. Speaker was third in batting and was voted league MVP. Wood won 34 games, including a record 16 in a row.

They defeated the New York Giants in 8 games in the 1912 World Series. One of the deciding plays was a muffed fly ball by Giants outfielder Fred Snodgrass (known as the $30,000 muff, the 30,000 referring to the prize money for the winner).

This team won a surprising amount of games with the players it had. The pitching staff was good, but there were no stars besides Wood. The starting lineup featured no stars other than Speaker. Little-known third baseman Larry Gardner was the next best hitter. Future Hall of Famer Harry Hooper had a poor offensive season.

Fenway Park opened on April 20, the same day as Navin Field in Detroit. It was supposed to be opened on April 18 (like Navin Field) but it rained in both cities on that day.

On April 26, Hugh Bradley became the first player to hit a home run over the Green Monster at Fenway Park. It was his only home run of the 1912 season, and one of only two he hit in his career, which spanned five seasons.