Live at Slane Castle is a Red Hot Chili Peppers concert video released on November 17, 2003, two years after the release of their last concert DVD, Off the Map. The concert, which took place on August 23, 2003, was their first headlining show at Slane Castle in Ireland having previously performed there in August 2001 opening for U2. The show was one of the biggest ever for the band with 80,000 fans in attendance with tickets selling out in under two and a half hours. Foo Fighters also played as one of several supporting acts, and have their own DVD footage of the concert. Other acts supporting on the day included Queens of the Stone Age, PJ Harvey, Feeder and Morcheeba.

The Red Hot Chili Peppers are an American rock band formed in Los Angeles in 1982, comprising vocalist Anthony Kiedis, bassist Flea, drummer Chad Smith, and guitarist John Frusciante. Their music incorporates elements of alternative rock, funk, punk rock, hard rock, hip hop, and psychedelic rock. Their eclectic range has influenced genres such as funk metal, rap metal, rap rock, and nu metal. With over 120 million records sold worldwide, the Red Hot Chili Peppers are one of the top-selling bands of all time. They hold the records for most number-one singles (15), most cumulative weeks at number one (91) and most top-ten songs (28) on the Billboard Alternative Songs chart. They have won six Grammy Awards, were inducted into the Rock and Roll Hall of Fame in 2012, and in 2022 received a star on the Hollywood Walk of Fame.