Johann Christoph Bach (6 December 1642 – 31 March 1703) was a German composer and organist of the Baroque period. He was born at Arnstadt, the son of Heinrich Bach, Johann Sebastian Bach's great uncle. Johann Christoph had a reputation as a composer that was only equalled by that of Johann Sebastian within the Bach family during his lifetime. He was organist at Eisenach and later a member of the court chamber orchestra there.