John Horsch (15 January 1871 - 12 October 1949) was a German Mennonite pastor who was the leader of the South German Mennonite Conference and founder and chairman of the Christenpflicht relief organization.
He was the younger brother of John Horsch, who was a Mennonite writer and publisher in the United States.
Horsch was born in Giebelstadt, in the Kingdom of Bavaria in 1871 to a family of Mennonite preachers and elders.
In 1920, Horsch founded the Christenpflicht relief organization, based in his estate at Hellmannsberg near Ingolstadt, which distributed food and necessities to those in need in Southern Germany.
Horsch was critical of the financial mismanagement of the Rhön Bruderhof, which Christenpflicht supported with food supplies.