Marsilio is an Italian name most likely to refer to:
Marsilio Ficino (1433–1499), Italian scholar and Catholic priest
It may also refer to:
Marco Marsilio (born 1968), Italian politician Marsilio da Carrara (1294–1338), Lord of Padua Marsilio Landriani (bishop) (1528–1609), Roman Catholic prelate and bishop of Vigevano Marsilio Rossi (1916–1942), Italian sprinter Marsilius of Padua (1275–1342), Italian scholar King Marsile in the Matter of France