John Eleazer Remsburg (January 7, 1848 – 1919) was an ardent religious skeptic in America in the late 19th and early 20th centuries. His name is sometimes spelled Remsberg. Remsburg was born in Fremont, Ohio, a son of George J. and Sarah A. (Willey) Remsburg. He enlisted in the Union army at the age of sixteen during the American Civil War. On October 9, 1870, he married Miss Nora M. Eiler of Atchison, Kansas.