Antonius Tom Holkenborg (born 8 December 1967), known by his stage name Junkie XL and occasionally JXL, is a Dutch composer, multi-instrumentalist, DJ, producer, and engineer.

Originally known for his trance productions, he has moved to producing electronica and big beat music and film scores. Junkie XL is probably best known for his remix of Elvis Presley's "A Little Less Conversation", which became a worldwide hit in 2002.

In film scores, he is perhaps best known for his work in the DC Extended Universe beginning with Batman v Superman: Dawn of Justice with Hans Zimmer, contributing to the theme song for Wonder Woman.