John Psathas, ONZM (born 1966) is a New Zealand composer, son of Greek immigrant parents. He has works in the repertoire of such high-profile musicians as Evelyn Glennie, Michael Houstoun, Michael Brecker, Joshua Redman and the New Juilliard Ensemble, and is one of New Zealand's most frequently performed composers. He has established an international profile and receives regular commissions from organisations in New Zealand and overseas.