Georg Christoph Martini or Giorgio Cristoforo Martini, also called il Sassone (the Saxon) (died December 21, 1745) was a German-Italian painter, engraver, travel writer, archeologist, and antiquarian.
He was born in Bad Langensalza in then Saxony. he came to Lucca to learn painting. He served as a secretary for the Ambassador from Lucca to Vienna, Carol Mansi during 1736-1742. Among his pupils in 1725 was Giuseppe Antonio Luchi. He wrote in German three volumes of In italia (1721-1745). He described and illustrated many Roman and Etruscan antiquities found in the region of Lucca. He also had an eye to natural landscapes and flora and fauna.
While he died in Lucca, he was buried in Livorno in the Protestant funeral. he had no wife or heirs.