Hormoz Farhat (Persian: هرمز فرهت; 9 August 1928 – 16 August 2021) was a Persian-American composer and ethnomusicologist who spent much of his career in Dublin, Ireland. An emeritus professor of music, he was a fellow of Trinity College, Dublin. Described by the Irish Times as a "a gifted and distinctive composer of contemporary classical music," include orchestral, concertante, piano and choral music, as well string quartets and chamber works. He also wrote numerous film scores, including that of Dariush Mehrjui's 1969 film The Cow. However, his musicological research dominates his legacy; his writings on the music of Iran—a country which he insisted be called 'Persia'—were pivotal in ethnomusicology, particularly his acclaimed 1990 study The Dastgah Concept in Persian Music.