Savignano sul Rubicone is a comune in the Province of Forlì-Cesena in the Italian region Emilia-Romagna, located about 90 kilometres southeast of Bologna and about 30 kilometres southeast of Forlì. The comune takes its name from the Rubicon, famous for Julius Caesar's historic crossing. A combination of natural and man-made changes caused the original Rubicon to change course repeatedly. For centuries the exact location of the original river was unknown.