Ten is the debut studio album by American rock band Pearl Jam, released on August 27, 1991, through Epic Records. Following the disbanding of bassist Jeff Ament and guitarist Stone Gossard's previous group Mother Love Bone, the two recruited vocalist Eddie Vedder, guitarist Mike McCready, and drummer Dave Krusen to form Pearl Jam in 1990. Most of the songs began as instrumental jams, to which Vedder added lyrics about topics such as depression, homelessness, and abuse.

Though a grunge record, Ten's musical style is influenced by classic rock and combines an "expansive harmonic vocabulary" with an anthemic sound. While it deals with dark subject matter, it has generally been seen as a landmark of the early 1990s alternative rock sound, with Vedder's unusually deep and strong voice alternating between solidity and vibrato against the unrestrained, guitar-heavy, hard rock sound that drew influence from rock bands of the 1970s.

Ten was not an immediate success, but by late 1992 it had reached number two on the Billboard 200. The album produced three hit singles: "Alive", "Even Flow", and "Jeremy". "Jeremy" became one of Pearl Jam's best-known songs, and received nominations for Best Rock Song and Best Hard Rock Performance at the 35th Grammy Awards.The video for "Jeremy" was heavily rotated by MTV, and received four awards at the 1993 MTV Video Music Awards, including Video of the Year and Best Group Video.