"What's Luv?" is a hit single by rapper Fat Joe featuring singer Ashanti and rapper Ja Rule. The single peaked at #4 in the UK, and peaked and stayed for five weeks at #2 on the Billboard Hot 100. It was Ashanti's second top ten single, and Fat Joe's first. The single helped make Ashanti the first female artist to simultaneously occupy the top two positions on the Hot 100. From April 20 to May 18, 2002, Foolish and What's Luv? were at #1 and #2 respectively.

The beat samples the 2Pac song "Niggaz Nature", and the song's chorus interpolates the Tina Turner song "What's Love Got to Do with It".

The song is also featured in the 2002 movie Juwanna Mann.