The 2012 D.C. United season was the club's seventeenth season of existence, and their seventeenth consecutive season of playing in Major League Soccer, the top division of American soccer. The club's season began on March 10, with a 0–1 home defeat against Sporting Kansas City, and culminated on November 18 with a 1–1 draw against Houston Dynamo. Outside of MLS, United reached the round of 16 of the U.S. Open Cup, where they lost in extra time to the Philadelphia Union.