Arnold Matthias Brunckhorst (1670–1725) was a German organist and composer.
He was born in Celle or Wietzendorf. Beginning in 1693, he served as an organist at St. Andreas in Hildesheim. In 1697, he assumed the organist's post at the Stadtkirche in Celle. In 1720, he was appointed court organist at Hanover. Source : Wikipedia