Marsilio Zorzi (fl. 1234–1271) was a Venetian nobleman and statesman, one of the first notable members of the Zorzi family. In 1242–1244 he served as bailo of Venice in the Kingdom of Jerusalem, where he became involved in the War of the Lombards. During his tenure there, he gathered historical material for his report, which is a crucial historical source on the Crusader states of the Levant. After serving as count of Ragusa in 1252–1254, in 1254 he became the hereditary count of Curzola (Korčula) in Dalmatia, which remained under first Zorzi rule until 1358. Marsilio also served Venice in several civic magistracies, as governor of the Republic of Ragusa, and as a diplomat. He was married but had no offspring.