Californication is the seventh studio album by American rock band Red Hot Chili Peppers. It was released on June 8, 1999, on Warner Bros. Records and was produced by Rick Rubin. Californication marked the return of John Frusciante, who had previously appeared on Mother's Milk and Blood Sugar Sex Magik, to replace Dave Navarro as the band's guitarist. Frusciante's return was credited with changing the band's sound altogether, producing a notable shift in style from the music recorded with Navarro. The album's subject material incorporated various sexual innuendos commonly associated with the band, but also contained more varied themes than previous outings, including death, contemplations of suicide, California, drugs, globalization, and travel.
 
Californication is the Chili Peppers' most commercially successful studio release internationally, with over 15 million copies sold worldwide, and more than 7 million in the United States alone. As of 2002, the album had sold over 4 million copies in Europe. The record produced several hits for the band, including "Otherside", "Californication" and the Grammy Award-winning "Scar Tissue". Californication peaked at number three on the US Billboard 200.
 
In the United States the album debuted and peaked at number three on the Billboard 200 the week of June 26, 1999 with 189,000 copies sold. The next week it dropped to number seven and it was present on the chart for 101 weeks. It was certified six times platinum by the RIAA on June 28, 2016 for shipments of six million.
In the United Kingdom it debuted and peaked at number five on June 16, 1999, the next week it fell off to number seven; the album remained on the chart for 169 weeks. It was certified four times platinum by the BPI on September 2, 2016 denoting shipments of 1.2 million units.
In Germany, it was the band's best-selling album, staying on the Media Control Charts for 114 weeks (more than 2 years) and selling more than 750,000 copies, reaching 3× Gold.