"I Am the Best" (내가 제일 잘 나가) is a digital single by 2NE1. It was released on June 24, 2011 and was later included in the second mini album.
The song was digitally re-released on international platforms on December 9, 2014, after Capitol Records decided to promote the song in the United States. The song had indeed received worldwide exposure after being used in a Microsoft advertisement. It sold 3.74 million digital copies and won Mnet Asian Asian Music Award for Song of the Year.