Marco Ruffo

Marco Ruffo, known in Russian chronicles as Mark Fryazin, was an Italian architect active in Moscow in the late fifteenth century. His Italian name remains uncertain; Ruffo was a nineteenth-century conjecture.

In 1484 he built a treasury for Ivan III in the Kremlin, followed in 1487 by the Small Embankment Palace. His surviving work is the Beklemishevskaya tower, and he also worked on the Kremlin's Spasskaya and Nikolskaya towers, later completed by Solari.

He began the Palace of Facets in 1487, completed by Solari in 1491. Chronicles last mention him in 1491; his later fate is unknown.