Dominick Martin, better known by his stage name Calibre, is a Northern Irish drum and bass music producer and DJ from Belfast. He is highly regarded for his influence on the liquid funk style of drum and bass, which was partially named after his distinct production style. He primarily releases his own works through his personal label, Signature Recordings, but has also released on labels such as Hospital Records, V Recordings, Creative Source and Soul:R.

Many of his productions–some of which were unreleased at the time–became synonymous with liquid funk due to DJ Fabio playing most of Martin's productions on his BBC Radio 1 show, Liquid Funk, and at Swerve club nights (originally known as Speed, which was co-ran with LTJ Bukem) in the early 2000s. Beginning in 2007, some of these unreleased productions would be released under the "Shelflife" series of albums alongside other works by Martin on his personal record label, Signature Records.

According to UKF, none of Martin's productions have been officially remixed by other artists.

In 2019, Martin was awarded Critics Choice in the Drum&BassArena Awards 2019.