Ben Frost (born 1980) is an Australian composer and producer. He is based in Reykjavík, Iceland.
Frost composes minimalist, instrumental and experimental music.

His albums include: Steel Wound (2003), School of Emotional Engineering (as part of the band School of Emotional Engineering) (2004) Theory of Machines (2007) and By The Throat (2009), Sólaris (with Daníel Bjarnason) (2011), and A U R O R A (2014). He has collaborated with contemporary dance companies Chunky Move, the Icelandic Dance Company and the British choreographer Wayne McGregor. He composed the music for Wayne McGregor's dance Far.
Frost co-composed with Daníel Bjarnason, Music for Solaris, which was inspired by both Stanislaw Lem's original novel and the 1972 Tarkovsky film Solaris. It was performed by Frost, Bjarnason and Sinfonietta Cracovia. He composed the music for the films, Sleeping Beauty, In Her Skin and Icelandic drama The Deep
In 2013, in his first directorial role, he premiered a music-theatre adaptation of the Iain Banks novel The Wasp Factory.