Junkie XL (also known as JXL) is musician Tom Holkenborg, born in Lichtenvoorde, The Netherlands on 8 December 1967. After producing and touring with the Dutch group Weekend at Waikiki, he split with them in 1995 and began writing his own tracks as Junkie XL in 1997. He has worked with many electronic music artists, including Sander Kleinenberg, DJ Tiësto and Sasha.

In 2002 he left The Netherlands to live and work in the United States where he works on soundtracks for movies and computer games.

He uses the name "JXL" in those cases where the term Junkie might cause offense.

Some of his better-known songs include:

* Today (the title track from his 2006 release Today)
* Future in Computer Hell (featured on Sasha's Global Underground 013: Ibiza)
* A Little Less Conversation (remix of Elvis Presley's original)
* Zerotonine (featured on Dave Seaman's Global Underground 016: Cape Town)
* Beauty Never Fades (feat. Saffron of Republica, featured in a promotional video of the game EvE-Online)
* Breezer (with Sasha, featured on Deep Dish's Global Underground 025: Toronto)
* Obsession (with DJ Tiësto)
* Feuer Frei! (Rammstein vs. Junkie XL Remix) (B-side on Rammstein's Feuer frei! single)
* Crusher (feat. Saffron of Republica) - Theme song of Quantum Redshift
* Outrageous (JXL Remix) on the Limited Edition of Britney Spears' Greatest Hits: My Prerogative Album with the Bonus Remix CD.
* Beauty on the Fire (Remix for the Natalie Imbruglia single)
* Action Radius (the track from the game Need for Speed: Underground)
* And Then We Kiss (Junkie XL remix) featured on B in the Mix: the Remixes by Britney Spears.

He has produced a remixed version of The Sims theme music for the computer game The Sims 2: Nightlife as well as the entire soundtrack for the Xbox racing game Forza Motorsport. He has also provided music for the films Kingdom of Heaven, Domino and DOA: Dead or Alive. His song Today was featured as one of Burnout Legends' EA Trax, apparently before the album was released. He has also produced a remix of the Destroy All Humans! theme which can be heard on the credits or on the soundtrack.

There are also 2 remixes by Junkie XL on the Need for Speed: Carbon soundtrack. He composed the entire SSX: Blur soundtrack.

While JXL is considered to be an electronic music artist, he is surprisingly connected to the heavy metal culture: apart from providing remixes to both Fear Factory and Rammstein, he is signed to metal-label Roadrunner Records and has appeared on Roadrunner United.