Ludwig R. Conradi (or Louis R. Conradi; 20 March 1856 – 16 September 1939) was one of the leaders of European Adventism known for the controversy causing schism in the church, a Seventh-day Adventist evangelist and missionary, and in his last years a Seventh Day Baptist minister.
[1] In 1879, he met Ellen G. White, attended the Battle Creek College, and then worked in Middle West for the German-speaking people.
During the war he tried to have the church members support the German war effort and persecute those who resisted and caused a split in the Adventist church and the formation of the Seventh Day Adventist Reform Movement who resisted his decisions.
In 1932, he left the Adventist Church and became a member and minister at the Seventh Day Baptists.
His written works include a revision and enlargement of J. N. Andrews' History of the Sabbath and his own expositions of the books of Daniel and the Revelation were translated into several languages.