Pinkerton is the second studio album by the American rock band Weezer, released on September 24, 1996, by DGC Records. The guitarist and vocalist Rivers Cuomo wrote most of Pinkerton while studying at Harvard University, after abandoning plans for a rock opera, Songs from the Black Hole. It was the last Weezer album to feature the bassist Matt Sharp, who left in 1998.

To better capture their live sound, Weezer self-produced Pinkerton, creating a darker, more abrasive album than their self-titled 1994 debut. Cuomo's lyrics express loneliness and disillusionment with the rock lifestyle. The title comes from the character BF Pinkerton from Giacomo Puccini's 1904 opera Madama Butterfly, whom Cuomo described as an "asshole American sailor similar to a touring rock star". The album is heavily inspired by the opera; likewise, it contains references to Japanese culture.

Pinkerton produced the singles "El Scorcho" and "The Good Life". It debuted at number 19 on the US Billboard 200, failing to meet sales expectations. It received mixed reviews; Rolling Stone readers voted it the third-worst album of 1996. For subsequent albums, Cuomo returned to more traditional pop songwriting and less personal lyrics.

In subsequent years, Pinkerton was reassessed and achieved acclaim. Several publications named it one of the best albums of the 1990s, and it was certified platinum in the US in 2016. Several emo bands have credited it as an influence.