The Double was a double hit by the Seattle Mariners' Edgar Martínez in Game 5 of Major League Baseball's 1995 American League Division Series on October 8, 1995. Trailing by one run in the bottom half of the 11th inning, with Joey Cora on third base and Ken Griffey Jr. on first, Martinez's hit drove in Cora and Griffey, giving the Mariners a 6–5 victory over the New York Yankees to clinch the series, 3–2. The play is held to be the "biggest hit in franchise history".

In baseball, a double is the act of a batter striking the pitched ball and safely reaching second base without being called out by the umpire, without the benefit of a fielder's misplay or another runner being put out on a fielder's choice. A double is a type of hit and is sometimes called a "two-bagger" or "two-base hit". For statistical and scorekeeping purposes it is denoted by 2B.