John Sherer (fl. c. 1850 - 1875) was a publisher and freemason active in Cincinnati, Ohio, in the mid-19th century. He published a work entitled The Masonic Ladder: or the Nine Steps to Ancient Freemasonry, which included a catalog of all of his publications associated with freemasonry. He also issued a number of broadside 'carpets', in fact large linen backed posters meant to teach the progression and virtues of freemasonry. He also published a large-format Masonic themed view of Solomon's Temple. He is listed in the as a publisher in 1863 Cincinnati Directory, but by 1870, he's listing has changed to 'Masonic Publisher.' His birth a death dates are remarkably elusive.