"Miss You Much" is a song recorded by American singer Janet Jackson, released as the lead single from her fourth album Janet Jackson's Rhythm Nation 1814 (1989). The single spent four weeks at number-one on the US Billboard Hot 100, making it the longest running number-one single of 1989. "Miss You Much" was the second-best selling single of 1989 and the biggest radio airplay song of the year. It is Jackson's third longest running number-one single, behind "That's the Way Love Goes" (1993) and "All for You" (2001), which spent eight and seven weeks at number-one.

Its music video is considered iconic for its choreography and chair routine, and has been referenced by various artists. "Miss You Much" has inspired videos from Britney Spears, and was covered in the Korean film 200 Pounds Beauty, also being sampled by artists such as 50 Cent.

"Miss You Much" received two Grammy Award nominations, and was awarded two American Music Awards and a Billboard Award for Top Hot 100 Single of the Year. It has been included in each of Jackson's greatest hits albums, Design of a Decade: 1986–1996 (1995), Number Ones (2009) and Icon: Number Ones (2010).

After the success of Control, Jackson returned with "Miss You Much", the lead single from Rhythm Nation 1814. It became Jackson's biggest selling single at the time, reaching number one on the Billboard Hot 100, where it remained for four weeks. "Miss You Much" also became her second number-one hit, the first being "When I Think of You". The song sold over four million copies, becoming one of the biggest-selling songs of the year. The song peaked at number two in Canada and reached the top twenty in Australia and many European countries.

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