"No One" is a song by American singer and songwriter Alicia Keys from her third studio album, As I Am (2007). It was written and produced by Keys, Kerry Brothers Jr., and George M. Harry, and released as the album's lead single on September 10, 2007. The single topped the US Billboard Hot 100 for five consecutive weeks and also went number one in Croatia, Hungary, and Switzerland. It also reached the top ten in eighteen addititonal countries.
"No One" was the third-biggest song of 2008 in The US and Brazil. It was also the most listened-to song on US radio of 2008, with 3.08 million listeners. It was also the sixth-biggest song of the 2000's decade in The US. The song is certified seven-times platinum in The US and gold or higher in thirteen additional countries. Worldwide, the song sold 5.6 million copies by 2008. It also won Best Female R&B Vocal Performance and Best R&B Song at the 50th Grammy Awards on February 10, 2008.