Carl Zerrahn (28 July 1826 Malchow, Mecklenburg-Schwerin – 29 December 1909 Milton, Massachusetts) was a German-born American flautist and conductor. His widespread activity in the region made him an influential figure in New England and Boston classical music, especially choral music, in the latter half of the 19th century. He was especially successful in the presentation of the great oratorios and the management of large choruses.