Johann Aegidus Bach (9 February 1645 – November 1716) was the father of the composer Johann Bernhard Bach, and organist and municipal orchestra director of Erfurt, Germany. He was Johann Sebastian Bach's uncle and Johannes Bach's son. He was a violist and performer in the Stadtmusikanten Kompagnie in Erfurt. He was organist at the Kaufmannskirche and the Michaeliskirche; on 30 June 1682 he was named the director of the Ratsmusik; in 1694 he held the position of trade with the "Nurnberger Ware."