"What's Up" is a song sung by the American rock band 4 Non-Blondes. It was included in the band’s only studio album "Bigger, Better, Faster, More!" and was released as the second single. This song was composed by Linda Perry and released by Interscope Records on October 13, 1992.

"What's Up" became a popular single in the United States, Europe, Israel, Brazil, and other countries as soon as it was released.