Weezer (commonly known as the Blue Album) is the debut studio album by the American rock band Weezer, released on May 10, 1994, by DGC Records. It was produced by Ric Ocasek.

Weezer formed in Los Angeles in 1992, and initially struggled to engage audiences, who were more interested in grunge. In November, they recorded a demo, The Kitchen Tape, which brought them to the attention of DGC owner Geffen Records. Weezer selected Ocasek to produce for his work with the Cars. Most of the album was recorded at Electric Lady Studios in New York City between August and September 1993. The group treated the guitars and bass as a single, 10-string instrument, playing in unison. The guitarist Jason Cropper was fired during recording, as the band felt he was threatening their chemistry; he was replaced by Brian Bell.

Weezer was supported by the singles “Undone – The Sweater Song“, “Buddy Holly“, and “Say It Ain’t So“, whose music videos became MTV hits. It reached number sixteen on the US Billboard 200, and was certified triple platinum in 1995. It remains Weezer’s best-selling album, having sold at least 3.3 million copies in the U.S. and over 15 million copies worldwide by 2009. It received critical acclaim, and in 2020 Rolling Stone ranked it number 294 on its updated list of The 500 Greatest Albums of All Time.