"Better the Devil You Know" is a song by Australian singer and songwriter Kylie Minogue, taken from her third studio album Rhythm of Love (1990). The song was written and produced by Stock Aitken Waterman. The song was released as the album's lead single on 30 April 1990 by PWL and Mushroom Records. "Better the Devil You Know" is known as the song that re-invented Minogue with more sex appeal, as her previous albums were presented with her "girl next door" persona. Her music onwards presented a more independent approach.

"Better the Devil You Know" is one of Minogue's most famous singles, and ever since its release it has been lauded by music critics and fans alike, regularly voted the best Kylie single, if not even the best Stock Aitken Waterman song.

"Better the Devil You Know" became Minogue's fifth non-consecutive number two single, being blocked by Adamski's "Killer". The song stayed at number two for two consecutive weeks, and spent a total of 10 weeks in the chart. It was certified silver by the British Phonographic Industry (BPI) having sold 329,000 copies. In Minogue's native Australia, the song debuted at five on the week end of 10 June 1990. The song eventually peaked at number four on the charts and spent a total of thirteen weeks on the chart. It was then certified gold by the Australian Recording Industry Association (ARIA) with sales exceeding 35,000 copies.