Ingo Metzmacher (born 10 November 1957, Hanover) is a German conductor. He is the son of the cellist Rudolf Metzmacher. His musical education in piano, music theory and conducting was in Hanover, Salzburg and Cologne. He later joined the Ensemble Modern in 1981 as its pianist, and became the orchestra's conductor in 1985. In 1994 he gave the premiere of the revised version of Hans Werner Henze's Symphony No. 6, and 1997 he conducted the world premiere of Henze's Symphony No.