Matthew Shlomowitz (b. 1975) is a composer of concert music and performance pieces. Raised in Adelaide, Australia, he now lives in London. He is Associate Professor in Composition at University of Southampton, and co-directs the new music ensemble Plus Minus with Joanna Bailie.

He has composed works for groups such asasamisimasa, bESIdES, Calefax, Ensemble Offspring, EXAUDI, Ives Ensemble, Nieuw Ensemble, Quatuor Diotima, Ricciotti Ensemble, Speak Percussion, Wespoke New Music Company and soloists Claire Edwardes, Juliet Fraser, Mark Knoop and Håkon Stene and Stephane Ginsburgh.

He has three ongoing projects: Popular Contexts, a series combining recordings of recognisable real world sound with instrumental music; Letter Pieces, which combine physical actions, music and text; and Public Lectures about Music, a series of lecture-pieces addressing ideas such as aesthetic judgement and emotional responses to music.