FutureSex/LoveSounds is the second studio album by American singer-songwriter Justin Timberlake, released on September 8, 2006 by Jive Records and Zomba. Following a three-year writing hiatus, Timberlake conceived the album in collaboration with producer Timbaland and the latter's colleague Danja primarily at Timbaland's Thomas Crown Studios. By comparison with Timberlake's debut album Justified (2002), FutureSex/LoveSounds was influenced by a wider range of genres including techno, electro-funk, trance, and rock. It features reprises and interludes interspersed with the album's full songs.

FutureSex/LoveSounds received mostly positive reviews from critics, who noted its wide range of influences and eclectic sound. The album produced six singles that attained chart success; including US Billboard Hot 100 number-one singles: "SexyBack", "My Love", and "What Goes Around... Comes Around". With "Summer Love", the album achieved four US Mainstream Top 40 number-one songs. Many music publications considered it among the best albums of the 2000s. Aside from earning numerous best-of-the-decade lists, the album received several Grammy Award nominations, including Album of the Year and Best Pop Vocal Album, while its first four singles won in their respective categories. It has been certified multi-platinum in many countries worldwide, and has sold over 10 million copies, with four million in the United States.

The album has been added to the Rock and Roll Hall of Fame's musical library and archive. It is also considered by critics and fans to be one of Timberlake's best albums to date. To further promote the album, Timberlake embarked on his second concert tour, entitled FutureSex/LoveShow, which became one of the highest-grossing tours in 2007.