Jonathan Julian Hopkins (born 15 August 1979) is an English electronic musician and producer. He began his career playing keyboards for Imogen Heap, and he has produced and contributed to albums by Brian Eno, Coldplay, and David Holmes, among others.

Hopkins composed the soundtrack to the 2010 film Monsters, which was nominated for an Ivor Novello Award for Best Original Score. His third studio album, Insides, reached No. 15 on the US Dance/Electronic Albums chart in 2009. His collaborations on Small Craft on a Milk Sea with Brian Eno and Leo Abrahams and Diamond Mine with King Creosote both reached No. 82 on the UK Albums Chart. His albums Diamond Mine (2011) and Immunity (2013) were both nominated for the Mercury Prize. His fifth studio record, Singularity, received a Grammy nomination for Best Dance/Electronic Album in December 2018. Hopkins's sixth studio album, Music for Psychedelic Therapy, was released on 12 November 2021.

Jon Hopkins was born in 1979 in Kingston upon Thames and grew up in nearby Wimbledon. He first became aware of electronic music after hearing early house music on the radio at the age of seven or eight, and also became a fan of Depeche Mode and the Pet Shop Boys. These records inspired an early fascination with synths.

At the age of 12, Hopkins began studying piano at the Junior Department of the Royal College of Music in London, where he continued until age 17. The composers that were greatly influential to him whilst studying were Ravel and Stravinsky, and he eventually won a competition to perform a concert of Ravel's Piano Concerto in G with an orchestra. For a time Hopkins considered becoming a professional pianist, only to decide classical performance was too formal and unnerving to pursue full-time.

As a teenager he also listened to acid house, early hardcore, grunge, as well as electronic artists such as Acen, Seefeel, and Plaid. When Hopkins was 14, he got his first computer, an Amiga 500, and started programming MIDI material. By the age of 15, he had saved up enough money from winning piano competitions to buy a low-level professional Roland synth, and on this he began creating his first full-length electronic compositions.

After finishing his final exams at age 17, Hopkins accompanied his friend Leo Abrahams to an audition for Imogen Heap's backing band. Hopkins decided to audition as well, and was hired to handle both keyboard and samples, while Abrahams was hired as guitarist. He toured with the new band for the entirety of 1998.

In 1999, Hopkins signed with boutique London label Just Music as a solo artist, and began recording his debut album Opalescent. At the time he was also working part-time as a studio session musician. Opalescent attracted positive press attention upon its release, and several tracks were licensed to Sex and the City. The Guardian reviewed it as "a beautifully realised debut... Using synth oozes, phased and echoed guitars and pianos and chilled beats, his wonderful tunes drift from calm to eerie power like a restless sea... It will delight any lovers of beautiful music." DJ Magazine gave it 4/5 stars, and stated "Piano, guitar strings and slow beats blend like the clouds at sunset (or an opiate smoothy) filtering in and out like elegantly wasted beauty. Darker drums add a further depth."

Hopkins released his second album, Contact Note, on Just Music in 2004 while still working as a studio musician. The album slowly gained an underground following but failed to take off, and led Hopkins to become disillusioned with his solo career, and take a break from writing to learn how to become a producer.