Seigneur Christophe de Cattan, also called Christopher Cattan (flourished 1530s-1540s, died before 1558), presumed Francophone and Anglophone variants of the Italian name Cristoforo Cattaneo (a form sometimes used for him in current scholarship), was an Italian humanist author of the second quarter of the sixteenth century. Of Italian stock but Genevan origin, he served as a man-at-arms under French command in France, and wrote in French. He is known as the learned author of a work about Geomancy, which was published posthumously in 1558 in Paris as La Géomance du Seigneur Christofe de Cattan, with further printings in 1567 and 1577. Most if not all of what is known about the author derives from information in the book itself.