"Only U" is a song by American singer Ashanti from her third studio album, Concrete Rose (2004). The song's introduction uses a sample of Club Nouveau's 1986 song "Why You Treat Me So Bad". "Only U" is a rock-tinged song, that finds Ashanti in love and willing to do anything to be with the one she loves, no matter the cost.

Ashanti Shequoiya Douglas is an American singer, songwriter and actress. She was first discovered as a teenager and signed to Irv Gotti's Murder Inc. Records, an imprint of Def Jam Recordings in 2002. That same year, she was featured on Fat Joe's "What's Luv?" and Ja Rule's "Always on Time", both of which were two of the biggest hit songs of 2002. She became the first female artist to occupy the top two positions on the U.S. Billboard Hot 100 chart simultaneously with "Foolish" and "What's Luv?" at numbers one and two, respectively.