"Papercut" is a song by the American rock band Linkin Park. It was released as the third single from their debut album Hybrid Theory, and appears as the opening track on the record. The "Papercut" single was never officially released in the US. The song reached number 14 in the UK Singles Chart in 2001 and was in the chart for 6 weeks. It also reached number 32 on the Modern Rock Tracks Chart in 2002.

"Papercut" is a song about an individual who always looks out for himself, and is haunted by paranoia.

Even though there are no acoustic instruments in the song, lead guitarist Brad Delson is shown playing an acoustic guitar in the video, and Phoenix is shown playing an acoustic bass guitar. And although there is drumming, Rob Bourdon doesn't play drums at all in the video. Chester Bennington has stated that "Papercut" is his favorite song from Hybrid Theory. In live performances, the line "something in here's not right today" is changed to "something inside's not right today". Also, Chester screams parts of the verses during live performances. It was also included in the soundtrack of 2001 film The One.

On Linkin Park's remix album Reanimation (2002), there is a remix of this song, titled "Ppr:Kut", which was remixed by Cheapshot. Elements from the song were used in the song "Sold My Soul to Yo Mama", which appears on the Linkin Park Underground 4.0 and Songs from the Underground. Furthermore, the mashup EP Collision Course (2004) contains a mix of this song and Jay-Z's "Big Pimpin'", in 2005, the song was mashed-up with David Banner's "Like a Pimp (Remix)" for the mixtape hosted by Mike Shinoda, Rock Phenomenon, creating the song David Banner vs. Linkin Park.