Twin Freaks is a collaborative album by musician Paul McCartney with DJ and producer Freelance Hellraiser (Roy Kerr). The album was released on June 14, 2005.

McCartney and Kerr created the double vinyl album as a continuation of Kerr's collaboration with McCartney from a 2004 tour. Kerr had previously released the mash-up album A Stroke of Genius, in 2002. The format of the mashup is that of an extreme remix in which two disparate musical and recording experiences are combined in a manner that goes beyond remix to literally merge or mash up the two songs so that they emerge as something unique or hybridized. The technique sometimes obscures the original source material or so seamlessly blends the divergent elements that disentangling the grafted parts becomes nearly impossible.

Kerr performed a half-hour set prior to McCartney's 2004 gigs in which the Kerr remixed various McCartney tracks into unusual and often unrecognizable forms. Twin Freaks was the outgrowth of these manipulations.

All McCartney tracks are strongly revised and reinvented in the process. Who is responsible for what aspects of the works or their reinvention is unclear. Parts of basic McCartney tracks are vigorously reworked.

Sir James Paul McCartney, MBE, Hon RAM, FRCM (born 18 June 1942) is an English musician, singer-songwriter and composer. Formerly of the Beatles (1960–1970) and Wings (1971–1981), he has been described by Guinness World Records as "The Most Successful Composer and Recording Artist of All Time", with 60 gold discs and sales of over 100 million albums and 100 million singles. With John Lennon, George Harrison, and Ringo Starr, he gained worldwide fame as a member of the Beatles, and with Lennon formed one of the most celebrated songwriting partnerships of the 20th century. After leaving the Beatles, he began a solo career and later formed the band Wings with his first wife, Linda Eastman, and singer-songwriter Denny Laine.

According to the BBC, his Beatles song "Yesterday" has been covered by over 2,200 artists—more than any other song. Wings' 1977 release, "Mull of Kintyre", became one of the best-selling singles ever in the UK, and he is "the most successful songwriter" in UK chart history, according to Guinness. As a songwriter or co-writer, he is included on thirty-one number one titles on the Billboard Hot 100, and as of 2012 he has sold over 15.5 million RIAA certified units in the United States.