The Circolo Matematico di Palermo (Mathematical Circle of Palermo) is an Italian mathematical society, founded in Palermo by Sicilian geometer Giovanni B. Guccia in 1884.[1] It began accepting foreign members in 1888,[1] and by the time of Guccia's death in 1914 it had become the foremost international mathematical society, with approximately one thousand members.[2] However, subsequently to that time it declined in influence.[1]