Ludwig Johannes Herbert Martin Münchmeyer (June 2, 1885, Hoel, Province of Hanover – July 24, 1947) was an Evangelical German pastor known for antisemitism. He led an "antisemitic spa" on the island of Borkum. He won a libel suit against Bruno Weil, but enough of the allegations of loose morals and scandalous misconduct against him were confirmed that he was defrocked. He later acted as a prominent Nazi speaker after leaving the German National People's Party. He also propagandized for the Nazi Party in Weser-Ems.
Ludwig Münchmeyer came from an old, Lower Saxonian family of pastors, which can be tracd back to Heinrich Münchmeyer (around 1654–1728), a tax official in Einbeck. He was the son of Carl Hans Wilhelm Ludwig Münchmeyer and Henriette Friederike Adelgunde Münchmeyer, née Brakebusch. In Rinteln he attended the gymnasium.
He studied Protestant theology in Erlangen, Leipzig and Göttingen and took the second theological examination in March 1911. On 17 June of the same year he was ordained. He was first employed as a seafarer's pastor in Cardiff in Great Britain. In March 1915 he became a military chaplain. He then became a military hospital chaplain in Hannover.