"Miss You Much" is the lead single from American R&B-pop singer Janet Jackson's fourth studio album, Janet Jackson's Rhythm Nation 1814(1989). The song was written and produced by Jimmy Jam and Terry Lewis.

Much was riding on the song, as it would either prove or disprove detractors of Jackson, who thought she was a fluke and a one-hit-album wonder. As it happened, it became one of Jackson's biggest-selling singles to date, hitting number one on both the Hot 100 and Hot R&B/Hip-Hop Songs charts, and becoming her second number-one hit on the BillboardHot 100, where it stood for four weeks. The song sold over four million copies, becoming the biggest-selling song of 1989. Apart from the United States, the song peaked at number one in Canada and managed to reach the top twenty in Australia and many European countries.

Jackson was honored with two American Music Awards for Favorite Soul/R&B Single and Favorite Dance Single for "Miss You Much", and was nominated for Favorite Dance Artist and a Grammy Award for Best Female R&B Vocal Performance. The single also won a Soul Train Music Award for Best R&B/Soul Single, Female. The single contains a B-side called "You Need Me", an outtake from Janet Jackson's Rhythm Nation 1814. The song is about Jackson's personal feelings about her father, and how the tables are turned, that now he needs her. At the time of its release there were reports that the B-side was the product of Jackson's record labels pressure on her in an attempt to produce specifically "Control Part 2" which reportedly was to address the rumors that remained in the press regarding her personal life and family. Jackson never caved in and followed the alleged orders to produce the project beyond this single track and therefore it is considered autobiographical and a collectors' item.

Jackson has performed the song on all of her tours, including the Rhythm Nation 1814 Tour, janet. Tour, The Velvet Rope Tour, All for You Tour, and Rock Witchu Tour.

Heavy anticipation and pre-retail-single radio airplay during the late summer of 1989 allowed "Miss You Much" to debut at number forty-two on the BillboardHot 100 the week of September 2, 1989, and basically soar to the number-one spot in five weeks, by October 7, 1989, where it remained for four weeks, easily becoming the biggest hit of 1989 in terms of weeks at number one. (Phil Collins would match this feat the week of December 23, 1989 with "Another Day in Paradise".)

The video for "Miss You Much" was directed by Dominic Sena and is a part of the Rhythm Nation 1814 Film. The black-and-white video begins with dancers hanging out at a pool hall gossiping about Jackson and her boyfriend. Jackson enters the room and her dancers look at her. One dancer asks Jackson what she has been up to. She calls them nosey, and then demonstrates her love through song and dance. The end of the video cuts out a final dance routine performed with chairs. The chair routine can be found on the Rhythm Nation CompilationCD and DVD.