"What Do I Have to Do" is a song performed by Australian singer-songwriter Kylie Minogue from her third studio album, Rhythm of Love (1990). The song was written and produced by Stock, Aitken & Waterman. Originally, the song was planned to be released after the single "Better the Devil You Know", but instead "Step Back in Time" was released and this was released as the third single on 21 January 1991 by PWL and Mushroom. The song received positive reviews from most music critics, who thought the song was an instant rave classic. Its music video was directed by Dave Hogan.

Rhythm of Love is the third studio album by Australian singer Kylie Minogue. It was released in the United Kingdom on 12 November 1990 by Pete Waterman Limited (PWL) and in Australia on 3 December 1990 by Mushroom Records. Recording sessions took place in London and Los Angeles during early-to-mid 1990. Minogue started to become more involved in the writing and production of the album; she was credited as co-writer for the first time, while Stock Aitken Waterman (SAW) were the primary producers along with new producers and collaborations, including Keith Cohen, Stephen Bray and Michael Jay.