John Holland Thow (October 6, 1949 – March 4, 2007) was an American music composer. Thow produced an extensive and diverse body of work comprising solo, chamber, vocal, choral, operatic and orchestral repertoire. Thow received a Fulbright Fellowship, which allowed him to travel to Rome for the first time in 1973 to study composition with Luciano Berio, who would become an important mentor and influence. Thow later returned to Italy as a recipient of the prestigious Rome Prize. During that time he also studied with Luigi Dallapiccola and Franco Donatoni.